Random X-crashes

[Martin Bretschneider]

Hi,

I use Karmic with KDE with kwins default compositions effect on a 
Geforce 6600 GT with the nvidia drivers.

From time to time a random application like kmail, okular or firefox 
with a click somewhere makes X crash and I get to kdm login.

I do not find anything interessting in /var/log/messages, 
/var/log/debug, /var/log/syslog, ~/.xsession-errors. Only in 
/var/log/X.org there is the same entry:


#############################################
Backtrace:
0: /usr/bin/X(xorg_backtrace+0x3b) [0x8133d6b]
1: /usr/bin/X(xf86SigHandler+0x55) [0x80c7d35]
2: [0xbef400]
Saw signal 11.  Server aborting.
(II) AT Translated Set 2 keyboard: Close
(II) UnloadModule: "evdev"
(II) Power Button: Close
(II) UnloadModule: "evdev"
(II) Power Button: Close
(II) UnloadModule: "evdev"
(II) Macintosh mouse button emulation: Close
(II) UnloadModule: "evdev"
(II) Logitech USB RECEIVER: Close
(II) UnloadModule: "evdev"
 ddxSigGiveUp: Closing log
#############################################

What can I do? In Jaunty there hasn't been these crashes.

TIA  Martin
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