Haven't had this problem - but do get an occasional  bsod from the
"inspect.sys" module - maybe related.

RP

2009/10/8 Russell McMahon <apptechnz@gmail.com>:
> If your Windows PC(s) have been running at 101% cpu occupancy all day and
> you have no hair left and you run Comodo fiewall/antivirus/... products, =
you
> may find that the following fix helps. It worked for me. Affects XP and
> Vista, at least.
> I believe that this is official Comodo writ but no guarantees.
>
> I usually find that Comodo products are stable and useful. In this case t=
hey
> got it very wrong. It's interesting that an update file can completely
> cripple a PC like this.
>
>
> =A0 =A0 =A0 =A0 =A0 =A0 Russell McMahon
>
>
> __________________________
>
> This
>
> http://forums.comodo.com/feedbackcommentsannouncementsnews_cis/workaround=
_for_the_99_cpu_problem_with_the_latest_virus_db_updates-t46150.0.html
>
> includes:
>
>
> Because of an issue with the latest virus database, some computers might
> observe significant CPU consumption problems caused by cmdagent.exe.
>
> You might observe this issue if your virus database version is 2525 and
> later. We have reverted the problematic updates. However, because of the
> nature of this issue, already affected computers might not function prope=
rly
> to revert the updates back.
>
> For those computers, the following instructions can remediate the issue:
>
> 1 - Reboot your computer in safe mode
> To enter to the safe mode, you need to press F8 button before Windows sta=
rts
> booting until you see the boot menu. In the boot menu, select the safe mo=
de.
> 2 - Delete the file in c:\program files\comodo\comodo internet
> security\scanners\bases.cav
> 3 - Copy c:\program files\comodo\comodo internet security\repair\bases.cav
> to c:\program files\comodo\comodo internet security\scanners folder(this
> action will replace the current bases.cav file with the original bases.cav
> file that comes with the installation).
> 4 - Restart your computer and Update your virus database again.
>
> after these 4 steps, everything should go back to normal.
>
> lternatively, you can manually download the latest bases.cav file from
> http://download.comodo.com/av/updates311/sigs/bases/BASE_END_USER_v2456.c=
avand
> replace the problematic bases.cav with this version.
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