Frequent X.org crashes

[Szabolcs Illes]

I'm experiency frequent(couple of times per week ) X crashes. Tried to upgrade first from 2.x to 3.0 than to 3.0.2 but no luck.

Xorg log says:

Backtrace:
0: /usr/bin/X(xorg_backtrace+0x3b) [0x813518b]
1: /usr/bin/X(xf86SigHandler+0x55) [0x80c7be5]
2: [0xb7f93400]
3: /usr/bin/X(FreePicture+0x7e) [0x81729ee]
4: /usr/bin/X(miGlyphs+0x55e) [0x816ea7e]
5: /usr/bin/X [0x81805d5]
6: /usr/bin/X(CompositeGlyphs+0xa2) [0x816eb92]
7: /usr/bin/X [0x817bcde]
8: /usr/bin/X [0x8175125]
9: /usr/bin/X(Dispatch+0x33f) [0x808d57f]
10: /usr/bin/X(main+0x3bd) [0x80722ed]
11: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5) [0xb7b62775]
12: /usr/bin/X [0x80717a1]
Saw signal 11.  Server aborting.
(II) AT Translated Set 2 keyboard: Close
(II) UnloadModule: "evdev"
(II) Macintosh mouse button emulation: Close
(II) UnloadModule: "evdev"
(II) ImExPS/2 Generic Explorer Mouse: Close
(II) UnloadModule: "evdev"
(II) VirtualBox Guest Service: Off.
(II) VirtualBox Guest Service: Close
(II) UnloadModule: "vboxmouse"
 ddxSigGiveUp: Closing log

System ubuntu 9.04 32 bit host win xp. 32 bit

Some thing happens with/without 3d support. VT-x is enabled.

please let me know if u need more info.

[Sander van Leeuwen]

VBox.log would be useful as well as a core dump from the X11 process. Thanks.