Hi People, I have a user who is regularly having X Crash. This seemed to happen once a month but has increased to once or twice a week. It doesn't seem to be application specific. The only information about whats causing the crash is from the X log. But this doesn't really give much to go on. Backtrace: 0: /usr/bin/Xorg(xf86SigHandler+0x71) [0x4865b1] 1: /lib64/libc.so.6 [0x3475430280] 2: /usr/lib64/xorg/modules/libfb.so(fbCopyAreammx+0x274) [0x2b917c4dbe14] 3: /usr/lib64/xorg/modules/libfb.so(fbComposite+0x5db) [0x2b917c4cc65b] 4: /usr/lib64/xorg/modules/libxaa.so(XAAComposite+0x2ac) [0x2b917c71d94c] 5: /usr/bin/Xorg [0x51379d] 6: /usr/bin/Xorg [0x50fb54] 7: /usr/bin/Xorg [0x5032ef] 8: /usr/bin/Xorg(Dispatch+0x1ca) [0x449c9a] 9: /usr/bin/Xorg(main+0x44e) [0x4325ee] 10: /lib64/libc.so.6(__libc_start_main+0xf4) [0x347541d974] Any suggestions as to how I diagnose this further? I have just applied the latest update