This problem appears to have disappeared in Feisty Herd 5 build 3/19/07 I tested it and it no longer hangs the kernel.
jt -- Feisty Herd5 killing kdm hangs the kernel https://launchpad.net/bugs/90696 -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
