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[Adam Ziegler <mrbond@xxxxxxxxxxxxxxxxxxxxxxxx>]

Core-i7 930
GTX 465
clean 10.10 install

I am experiencing similar issues with the latest server kernel, KDE
installed over the top, Xorg 1.9.0 from stock repositories.  The desktop
will lag severely for a few minutes, even switching NumLock/CapsLock
takes awhile to register.  Have found issues describing similar problems
mentioning problems with nVidia drivers, but that is not the case here.
Nothing relevant in system or app logs.

On occasion, switching to terminal via Ctrl+Alt+Fx will lag for some
10-15 seconds, then operation through there is as quick as ever.
top/htop reports heavy system CPU usage, but almost no processes report
using the CPU.  Sometimes (but not consistently) when the issue clears
up, dialog appears stating desktop effects have been disabled due to
unresponsiveness.  Will attempt to disable desktop effects and see if
that helps.

-- 
Xorg freeze without reason in Ubuntu 10.10
https://bugs.launchpad.net/bugs/658649
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