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| From | Ben Bacarisse <ben.usenet@bsb.me.uk> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: Is it possible C is the security problem? |
| Date | 2015-11-18 03:40 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <87vb90x9du.fsf@bsb.me.uk> (permalink) |
| References | (9 earlier) <b21f92a7-2ac8-47f6-a4d5-5a22938ff0bf@googlegroups.com> <56421c54.6552890@news.xs4all.nl> <n1t78n$vc9$1@dont-email.me> <s3p54b14m62450uvglppme35m6etmseqe1@4ax.com> <564ba1c5.24676609@news.xs4all.nl> |
raltbos@xs4all.nl (Richard Bos) writes:
> Robert Wessel <robertwessel2@yahoo.com> wrote:
>
>> On Tue, 10 Nov 2015 11:52:41 -0500, Eric Sosman
>> >On 11/10/2015 11:35 AM, Richard Bos wrote:
>
>> >> Part of the problem is that there are edge cases - demonstrating the
>> >> differences between sorting algorithms, for one - where you _want_
>> >> bubble sort rather than quicksort. In security code, it may well be
>> >> important that all paths through an algorithm be a. optimised, but also
>> >> b. optimised to use the exact same time.
>> >
>> > Some graphics applications use bubble sort because it's often
>> >the best choice. You start with a "camera" that views objects in
>> >a scene, and you sort them by their distance from the camera so you
>> >can render them near-to-far (or far-to-near, depending on how your
>> >rendering system works). Then you advance the clock by delta-T and
>> >reposition the moving objects to render the next frame, and you once
>> >again want the objects sorted by distance.
>> >
>> > Guess what? Most of the "foreground" and "background" objects
>> >are still near and still far; few pairs have switched relative
>> >positions. That means the old sorted-by-distance list is still
>> >almost sorted, maybe even actually sorted. A bubble sort will cure
>> >the few inversions that may have crept in, very likely in just a
>> >pass or two.
>
> Never knew that, but it makes sense.
Yes, I think it's false. Insertion sort is usually considered better.
It has the same advantage of doing very little work on almost sorted
lists, but even then it usually does less work that bubble sort. In
fact I remember trying to find any input set in for which BS is better
than IS but I could not find one.
>> Although I'd guess that insertion sort is still better than bubble
>> sort in that case.
>
> Not at all. Remember that you start with an almost-sorted list in which
> the only expected anomaly is a few swapped objects, _not_ with an
> almost-sorted list plus a few new objects to insert. In other words, you
> get:
>
> 1 2 3 4 6 5 7 8 9
The details are going to depend on the details of how the algorithms are
actually implemented, but a test program I have reports:
Array data: 1 2 3 4 6 5 7 8 9 (9 values)
Bubble sort: 16 cmps, 3 moves
Insertion sort: 9 cmps, 3 moves
> and not
>
> 1 2 3 4 6 7 8 9 5
Yes, that's even better for insertion sort:
Array data: 1 2 3 4 6 7 8 9 5 (9 values)
Bubble sort: 40 cmps, 12 moves
Insertion sort: 12 cmps, 12 moves
For reference, here are the two sort functions:
void bubble_sort(SFI *sip, int *data, int n)
{
int swapped;
do {
swapped = 0;
for (int i = 1; i < n; i++)
if (out_of_order(sip, data[i-1], data[i])) {
swap(sip, &data[i-1], &data[i]);
swapped = 1;
}
} while (swapped);
}
void insertion_sort(SFI *sip, int *data, int n)
{
for (int i = 1; i < n; i++) {
for (int j = i; j > 0 && out_of_order(sip, data[j-1], data[j]); j--)
swap(sip, &data[j], &data[j-1]);
}
}
These may not be the best implementations, but look how simple this
insertion sort is. It wins on comparisons, is no worse on data moves,
and is simpler to implement. I can't think of a use for bubble sort
other than as a reference for other sort to be batter than!
(Test harness also available if anyone wants to add their own algorithms
or try their own test cases.)
--
Ben.
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Is it possible C is the security problem? G G <gdotone@gmail.com> - 2015-11-03 06:31 -0800
Re: Is it possible C is the security problem? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-03 14:57 +0000
Re: Is it possible C is the security problem? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-11-03 15:04 +0000
Re: Is it possible C is the security problem? G G <gdotone@gmail.com> - 2015-11-03 07:11 -0800
Re: Is it possible C is the security problem? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-03 15:25 +0000
Re: Is it possible C is the security problem? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-03 20:13 +0000
Re: Is it possible C is the security problem? Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-03 15:18 -0500
Re: Is it possible C is the security problem? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-03 20:34 +0000
Re: Is it possible C is the security problem? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-03 22:47 +0000
Re: Is it possible C is the security problem? Udyant Wig <udyantw@gmail.com> - 2015-11-04 15:36 +0530
Re: Is it possible C is the security problem? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-04 10:34 +0000
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-03 15:18 -0800
Re: Is it possible C is the security problem? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-03 17:42 -0800
Re: Is it possible C is the security problem? Geoff <geoff@invalid.invalid> - 2015-11-03 15:32 -0800
Re: Is it possible C is the security problem? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-03 23:57 +0000
Re: Is it possible C is the security problem? Geoff <geoff@invalid.invalid> - 2015-11-03 21:13 -0800
Re: Is it possible C is the security problem? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-04 07:22 +0000
Re: Is it possible C is the security problem? David Brown <david.brown@hesbynett.no> - 2015-11-04 11:32 +0100
Re: Is it possible C is the security problem? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-04 10:54 +0000
Re: Is it possible C is the security problem? David Brown <david.brown@hesbynett.no> - 2015-11-04 13:38 +0100
Re: Is it possible C is the security problem? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-11-07 08:27 +0000
Re: Is it possible C is the security problem? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-11-05 09:26 +0000
Re: Is it possible C is the security problem? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-05 10:03 +0000
Re: Is it possible C is the security problem? James Kuyper <jameskuyper@verizon.net> - 2015-11-05 08:53 -0500
Re: Is it possible C is the security problem? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-11-06 10:04 +0000
Re: Is it possible C is the security problem? Reinhardt Behm <rbehm@hushmail.com> - 2015-11-05 21:06 +0800
Re: Is it possible C is the security problem? Keith Thompson <kst-u@mib.org> - 2015-11-05 11:14 -0800
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-05 11:44 -0800
Re: Is it possible C is the security problem? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-07 02:43 -0800
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-07 17:30 -0800
Re: Is it possible C is the security problem? raltbos@xs4all.nl (Richard Bos) - 2015-11-10 16:35 +0000
Re: Is it possible C is the security problem? Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-10 11:52 -0500
Re: Is it possible C is the security problem? Robert Wessel <robertwessel2@yahoo.com> - 2015-11-11 00:48 -0600
Re: Is it possible C is the security problem? raltbos@xs4all.nl (Richard Bos) - 2015-11-17 21:55 +0000
Re: Is it possible C is the security problem? Robert Wessel <robertwessel2@yahoo.com> - 2015-11-17 19:14 -0600
Re: Is it possible C is the security problem? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-18 03:40 +0000
Re: Is it possible C is the security problem? Robert Wessel <robertwessel2@yahoo.com> - 2015-11-17 23:01 -0600
Re: Is it possible C is the security problem? Keith Thompson <kst-u@mib.org> - 2015-11-18 09:00 -0800
Re: Is it possible C is the security problem? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-18 09:09 -0800
Re: Is it possible C is the security problem? Robert Wessel <robertwessel2@yahoo.com> - 2015-11-18 15:35 -0600
Re: Is it possible C is the security problem? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-18 21:35 +0000
Re: Is it possible C is the security problem? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-18 20:38 -0800
Re: Is it possible C is the security problem? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-19 05:40 +0000
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-18 22:55 -0800
Re: Is it possible C is the security problem? Ian Collins <ian-news@hotmail.com> - 2015-11-19 19:56 +1300
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-18 23:40 -0800
Re: Is it possible C is the security problem? Ian Collins <ian-news@hotmail.com> - 2015-11-19 21:05 +1300
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-19 06:40 -0800
Re: Is it possible C is the security problem? asetofsymbols@gmail.com - 2015-11-19 11:37 -0800
Re: Is it possible C is the security problem? asetofsymbols@gmail.com - 2015-11-19 12:09 -0800
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-19 12:52 -0800
Re: Is it possible C is the security problem? Ian Collins <ian-news@hotmail.com> - 2015-11-20 12:20 +1300
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-19 15:34 -0800
Re: Is it possible C is the security problem? Ian Collins <ian-news@hotmail.com> - 2015-11-22 16:43 +1300
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-21 21:28 -0800
Re: Is it possible C is the security problem? Ian Collins <ian-news@hotmail.com> - 2015-11-22 20:51 +1300
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-22 07:26 -0800
Re: Is it possible C is the security problem? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-22 09:42 -0800
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-22 09:59 -0800
Re: Is it possible C is the security problem? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-23 07:08 +0000
Re: Is it possible C is the security problem? Ian Collins <ian-news@hotmail.com> - 2015-11-23 11:57 +1300
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-22 16:06 -0800
Re: Is it possible C is the security problem? Ian Collins <ian-news@hotmail.com> - 2015-11-23 13:26 +1300
Re: Is it possible C is the security problem? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-19 09:09 +0000
Re: Is it possible C is the security problem? Keith Thompson <kst-u@mib.org> - 2015-11-20 02:29 -0800
Re: Is it possible C is the security problem? raltbos@xs4all.nl (Richard Bos) - 2015-11-20 12:33 +0000
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-20 09:26 -0800
Re: Is it possible C is the security problem? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-19 13:37 +0000
Re: Is it possible C is the security problem? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-19 14:07 -0800
Re: Is it possible C is the security problem? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-20 01:38 +0000
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-19 18:43 -0800
Re: Is it possible C is the security problem? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-20 12:09 +0000
Re: Is it possible C is the security problem? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-20 01:48 -0800
Re: Is it possible C is the security problem? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-20 11:16 +0000
Re: Is it possible C is the security problem? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-20 05:04 -0800
Re: Is it possible C is the security problem? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-20 18:18 +0000
Re: Is it possible C is the security problem? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-20 11:55 -0800
Re: Is it possible C is the security problem? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-21 00:27 +0000
Re: Is it possible C is the security problem? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-20 18:57 -0800
Re: Is it possible C is the security problem? Keith Thompson <kst-u@mib.org> - 2015-11-20 19:50 -0800
Re: Is it possible C is the security problem? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-20 20:06 -0800
Re: Is it possible C is the security problem? Keith Thompson <kst-u@mib.org> - 2015-11-20 20:46 -0800
Re: Is it possible C is the security problem? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-20 20:56 -0800
Re: Is it possible C is the security problem? Robert Wessel <robertwessel2@yahoo.com> - 2015-11-21 04:58 -0600
Re: Is it possible C is the security problem? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-21 04:59 -0800
Re: Is it possible C is the security problem? Robert Wessel <robertwessel2@yahoo.com> - 2015-11-21 13:26 -0600
Re: Is it possible C is the security problem? Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-21 14:38 -0500
Re: Is it possible C is the security problem? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-21 06:49 +0000
Re: Is it possible C is the security problem? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-20 22:56 -0800
Re: Is it possible C is the security problem? Robert Wessel <robertwessel2@yahoo.com> - 2015-11-21 04:36 -0600
Re: Is it possible C is the security problem? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-21 06:44 +0000
Re: Is it possible C is the security problem? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-21 15:59 +0000
Re: Is it possible C is the security problem? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-21 18:33 +0000
Re: Is it possible C is the security problem? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-21 19:19 +0000
Re: Is it possible C is the security problem? Robert Wessel <robertwessel2@yahoo.com> - 2015-11-21 13:33 -0600
Re: Is it possible C is the security problem? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-22 14:42 +0000
Re: Is it possible C is the security problem? Tim Rentsch <txr@alumni.caltech.edu> - 2015-11-22 14:17 -0800
Re: Is it possible C is the security problem? Ian Collins <ian-news@hotmail.com> - 2015-11-20 14:51 +1300
Re: Is it possible C is the security problem? Robert Wessel <robertwessel2@yahoo.com> - 2015-11-19 08:06 -0600
Re: Is it possible C is the security problem? Robert Wessel <robertwessel2@yahoo.com> - 2015-11-18 15:40 -0600
Re: Is it possible C is the security problem? Tim Rentsch <txr@alumni.caltech.edu> - 2015-11-20 13:57 -0800
Re: Is it possible C is the security problem? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-21 06:56 +0000
Re: Is it possible C is the security problem? Tim Rentsch <txr@alumni.caltech.edu> - 2015-11-23 03:16 -0800
Re: Is it possible C is the security problem? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-23 22:28 +0000
Re: Is it possible C is the security problem? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-23 21:11 -0800
Re: Is it possible C is the security problem? Tim Rentsch <txr@alumni.caltech.edu> - 2015-11-24 10:29 -0800
Re: Is it possible C is the security problem? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-25 02:38 +0000
Re: Is it possible C is the security problem? Tim Rentsch <txr@alumni.caltech.edu> - 2015-11-27 13:54 -0800
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-10 10:23 -0800
Re: Is it possible C is the security problem? Keith Thompson <kst-u@mib.org> - 2015-11-10 11:21 -0800
Re: Is it possible C is the security problem? Melzzzzz <mel@zzzzz.com> - 2015-11-04 00:58 +0100
Re: Is it possible C is the security problem? Les Cargill <lcargill99@comcast.com> - 2015-11-03 18:26 -0600
Re: Is it possible C is the security problem? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-04 02:06 +0000
Re: Is it possible C is the security problem? Ian Collins <ian-news@hotmail.com> - 2015-11-04 14:12 +1300
Re: Is it possible C is the security problem? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-04 07:02 +0000
Re: Is it possible C is the security problem? Ian Collins <ian-news@hotmail.com> - 2015-11-04 20:42 +1300
Re: Is it possible C is the security problem? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-04 08:06 +0000
Re: Is it possible C is the security problem? David Brown <david.brown@hesbynett.no> - 2015-11-04 11:25 +0100
Re: Is it possible C is the security problem? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-04 11:49 +0000
Re: Is it possible C is the security problem? David Brown <david.brown@hesbynett.no> - 2015-11-04 13:46 +0100
Re: Is it possible C is the security problem? raltbos@xs4all.nl (Richard Bos) - 2015-11-17 21:58 +0000
Re: Is it possible C is the security problem? David Brown <david.brown@hesbynett.no> - 2015-11-17 23:37 +0100
Re: Is it possible C is the security problem? David Thompson <dave.thompson2@verizon.net> - 2015-12-06 07:55 -0500
Re: Is it possible C is the security problem? Les Cargill <lcargill99@comcast.com> - 2015-12-06 14:23 -0600
Re: Is it possible C is the security problem? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-03 15:59 +0000
Re: Is it possible C is the security problem? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-03 16:55 +0000
Re: Is it possible C is the security problem? see.my.homepage@gmail.com - 2015-11-04 02:29 -0800
Re: Is it possible C is the security problem? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-04 10:48 +0000
Re: Is it possible C is the security problem? see.my.homepage@gmail.com - 2015-11-04 14:11 -0800
Re: Is it possible C is the security problem? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-05 00:39 +0000
Re: Is it possible C is the security problem? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-05 01:15 +0000
Re: Is it possible C is the security problem? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-05 02:02 +0000
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-04 18:31 -0800
Re: Is it possible C is the security problem? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-05 12:38 +0000
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-04 18:24 -0800
Re: Is it possible C is the security problem? Keith Thompson <kst-u@mib.org> - 2015-11-04 19:37 -0800
Re: Is it possible C is the security problem? David Brown <david.brown@hesbynett.no> - 2015-11-05 13:24 +0100
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-05 06:47 -0800
Re: Is it possible C is the security problem? see.my.homepage@gmail.com - 2015-11-05 00:35 -0800
Re: Is it possible C is the security problem? Richard Heathfield <rjh@cpax.org.uk> - 2015-11-05 09:55 +0000
Re: Is it possible C is the security problem? see.my.homepage@gmail.com - 2015-11-05 05:02 -0800
Re: Is it possible C is the security problem? raltbos@xs4all.nl (Richard Bos) - 2015-11-06 10:18 +0000
Re: Is it possible C is the security problem? see.my.homepage@gmail.com - 2015-11-06 05:57 -0800
Re: Is it possible C is the security problem? James Kuyper <jameskuyper@verizon.net> - 2015-11-04 08:32 -0500
Re: Is it possible C is the security problem? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-11-03 15:01 +0000
Re: Is it possible C is the security problem? Bartc <bc@freeuk.com> - 2015-11-03 15:10 +0000
Re: Is it possible C is the security problem? Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-03 11:02 -0500
Re: Is it possible C is the security problem? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-11-03 18:13 +0000
Re: Is it possible C is the security problem? Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-03 15:16 -0500
Re: Is it possible C is the security problem? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-11-04 09:38 +0000
Re: Is it possible C is the security problem? David Brown <david.brown@hesbynett.no> - 2015-11-04 11:38 +0100
Re: Is it possible C is the security problem? James Kuyper <jameskuyper@verizon.net> - 2015-11-03 11:58 -0500
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-03 09:13 -0800
Re: Is it possible C is the security problem? gazelle@shell.xmission.com (Kenny McCormack) - 2015-11-03 18:08 +0000
Re: Is it possible C is the security problem? Nobody <nobody@nowhere.invalid> - 2015-11-04 04:49 +0000
Re: Is it possible C is the security problem? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-04 02:22 -0800
Re: Is it possible C is the security problem? gazelle@shell.xmission.com (Kenny McCormack) - 2015-11-04 13:28 +0000
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-04 08:39 -0800
Re: Is it possible C is the security problem? John Bode <jfbode1029@gmail.com> - 2015-11-03 10:45 -0800
Re: Is it possible C is the security problem? supercat@casperkitty.com - 2015-11-03 11:05 -0800
Re: Is it possible C is the security problem? Les Cargill <lcargill99@comcast.com> - 2015-11-03 18:09 -0600
Is it possible C is the security problem? Chad <cdalten@gmail.com> - 2015-11-04 01:15 -0800
Re: Is it possible C is the security problem? gazelle@shell.xmission.com (Kenny McCormack) - 2015-11-04 13:31 +0000
Re: Is it possible C is the security problem? G G <gdotone@gmail.com> - 2015-11-18 10:55 -0800
Re: Is it possible C is the security problem? James Kuyper <jameskuyper@verizon.net> - 2015-11-18 14:05 -0500
Re: Is it possible C is the security problem? "D. Aaron Sawyer" <aaron@110.net> - 2015-11-18 19:47 -0500
Re: Is it possible C is the security problem? raltbos@xs4all.nl (Richard Bos) - 2015-11-20 10:43 +0000
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