Comment 26 for bug 548784

There's no indication of any problem in those logs; the kernel seems perfectly happy, and the Xorg.0.log doesn't seem to have anything out of the ordinary. Perhaps there's something in other log files which the apport-collect hook doesn't grab - could you reproduce this again and attach all the /var/log/Xorg.* files, and possibly anything matching /var/log/kdm* (I'm not sure what logs KDM generates).

If there's nothing in *those* logs I'll have to put my thinking cap on again.