Comment 7 for bug 107723

Happens with my version of Xorg 7.2 from Ubuntu after running any OpenGL program (Like the ones with Qt 4.3 for example.)

Backtrace:
0: /usr/X11R6/bin/X(xf86SigHandler+0x81) [0x80c5d91]
1: /lib/tls/i686/cmov/libc.so.6 [0xb7dede98]
2: /usr/lib/xorg/modules/extensions//libGLcore.so(XMesaResizeBuffers+0x29) [0xa7a04d29]
3: /usr/lib/xorg/modules/extensions//libGLcore.so [0xa7a01900]
4: /usr/lib/xorg/modules/extensions//libglx.so [0xb7c4b94a]
5: /usr/X11R6/bin/X(compPositionWindow+0x59) [0x80f6039]
6: /usr/X11R6/bin/X(ResizeChildrenWinSize+0x14f) [0x807a67f]
7: /usr/X11R6/bin/X(ReparentWindow+0x1cf) [0x807a8cf]
8: /usr/X11R6/bin/X(ProcReparentWindow+0xd5) [0x808c055]
9: /usr/X11R6/bin/X [0x8142531]
10: /usr/X11R6/bin/X(Dispatch+0x19f) [0x808c61f]
11: /usr/X11R6/bin/X(main+0x495) [0x8074785]
12: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xdc) [0xb7dd9ebc]
13: /usr/X11R6/bin/X(FontFileCompleteXLFD+0x1e1) [0x8073ab1]

Fatal server error:
Caught signal 11. Server aborting