I can confirm this bug, on Dell Inspiron 1501, AMD 3500+ 1.8GHz, ATI
Radeon Xpress 200m, default xorg.conf, 1GB ram.  This bug started on a
clean install of karmic, (I've been using Ubuntu since Gutsy Gibbon,
never seen it break like this before) and was even present when running
the liveCD.  The app-freezing order doesn't appear to have a pattern, or
happen after any set time post-resume, but never occurs without resuming
from suspend first.  The faults also, when I can get to the logs after
them, show that apparently processes (or subprocesses) are failing on
paging requests, which indicates to me that some kind of memory
corruption is occurring here.  It's also appearing on both my ATI
chipset and Andreas's Intel chipset.  I'm left with the conclusion that
it's an X-based bug, and the desire that I had some other system with
this latest version of X to test on.

I don't get the 
/usr/lib/pm-utils/sleep.d/99video resume suspend: Returned exit code 1
that Andreas got, instead I have the oddness of 
/usr/lib/pm-utils/sleep.d/99video suspend suspend: kernel.acpi_video_flags = 3 
success.
on suspend.

Any help is appreciated, this is one of two remaining bugs I have with
Karmic

-- 
Random freezes after system has been suspended at least once
https://bugs.launchpad.net/bugs/480850
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