It happened the same to me, and other users are reporting the same
problem on the Ubuntu forum: see
http://www.ubuntuforums.org/showthread.php?p=1482943.
For me, Xorg crashes when viewing this URL:
https://launchpad.net/distros/ubuntu/+bug/57914 , but only with Firefox.
When browsing the same
Kubuntu Dapper 6.06 here. Updated from 5.10 via network. Latest updates
installed. I have this bug now: it happens randomly. Didn't happen with
5.10 .
When it happens, I restart the X Server, using the mouse to select the
command from the kdm Menu, and the keyboard works again.
I use the