X session crashed

[Yoav Weiss]

X session crashed during normal work.
Attached are X logs and system info.

logs contains the following backtrace:

Backtrace:
0: /usr/bin/X (xorg_backtrace+0x3b) [0x80e937b]
1: /usr/bin/X (0x8048000+0x61c7d) [0x80a9c7d]
2: (vdso) (__kernel_rt_sigreturn+0x0) [0x2b5410]
3: /usr/lib/xorg/modules/drivers/radeon_drv.so (0x46a000+0xb2039) [0x51c039]
4: /usr/lib/xorg/modules/libexa.so (0x75a000+0x9490) [0x763490]
5: /usr/lib/xorg/modules/libexa.so (0x75a000+0x9558) [0x763558]
6: /usr/bin/X (miCopyRegion+0x21b) [0x819cadb]
7: /usr/bin/X (miDoCopy+0x44d) [0x819cffd]
8: /usr/lib/xorg/modules/libexa.so (0x75a000+0x7a4a) [0x761a4a]
9: /usr/bin/X (0x8048000+0xda9c3) [0x81229c3]
10: /usr/bin/X (0x8048000+0x28df5) [0x8070df5]
11: /usr/bin/X (0x8048000+0x2a477) [0x8072477]
12: /usr/bin/X (0x8048000+0x1ed7a) [0x8066d7a]
13: /lib/tls/i686/cmov/libc.so.6 (__libc_start_main+0xe6) [0x9d8bd6]
14: /usr/bin/X (0x8048000+0x1e961) [0x8066961]
Segmentation fault at address (nil)

[Yoav Weiss (yeeeev)]

Forgot to mention: running 32 bit Lucid (10.04)