Comment 11 for bug 309482

Interesting; according to the oem-config.log file, it's not X that's crashing but rather kwin:

update-initramfs: Generating /boot/initrd.img-2.6.28-7-generic
*** glibc detected *** kwin: double free or corruption (!prev): 0x0a06a030 ***
======= Backtrace: =========
/lib/tls/i686/cmov/libc.so.6[0xb6a085a4]
/lib/tls/i686/cmov/libc.so.6(cfree+0x96)[0xb6a0a556]
/usr/lib/libstdc++.so.6(_ZdlPv+0x21)[0xb6be9221]
/usr/lib/libQtDBus.so.4[0xb702f945]
/usr/lib/libQtDBus.so.4[0xb702a224]
/usr/lib/libQtDBus.so.4(_ZN15QDBusConnectionD2Ev+0x3a)[0xb70214da]
/usr/lib/libQtDBus.so.4[0xb702560f]
/lib/tls/i686/cmov/libc.so.6(exit+0x89)[0xb69c7b89]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xed)[0xb69af77d]
kwin[0x8048671]
======= Memory map: ========
...

I also notice this X backtrace in the Xorg.0.log, although without debug symbols installed it's tough to see what exactly is going on:

Backtrace:
0: /usr/bin/X(xorg_backtrace+0x3b) [0x813419b]
1: /usr/bin/X(xf86SigHandler+0x55) [0x80c76a5]
2: [0xb8098400]
3: /usr/lib/xorg/modules//libshadow.so(shadowRemove+0x4e) [0xb79b9eee]
4: /usr/lib/xorg/modules//libshadow.so [0xb79ba3a4]
5: /usr/bin/X [0x80c64c7]
6: /usr/bin/X [0x811197c]
7: /usr/bin/X [0x811dcac]
8: /usr/bin/X [0x812450c]
9: /usr/bin/X [0x80cef1e]
10: /usr/lib/xorg/modules/drivers//vesa_drv.so [0xb7b4bbc2]
11: /usr/bin/X [0x80c719b]
12: /usr/bin/X [0x81617ab]
13: /usr/bin/X [0x80e1308]
14: /usr/bin/X [0x80cbb33]
15: /usr/bin/X [0x814ac05]
16: /usr/bin/X [0x817bc7c]
17: /usr/bin/X [0x814497b]
18: /usr/lib/xorg/modules/extensions//libglx.so [0xb7b9646a]
19: /usr/bin/X(main+0x44c) [0x807228c]
20: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5) [0xb7c6c775]
21: /usr/bin/X [0x80716b1]
Saw signal 11. Server aborting.
 ddxSigGiveUp: Closing log