Comment 18 for bug 568779

Also impacted by this bug, reported here https://bugs.launchpad.net/ubuntu/+source/linux-meta/+bug/569702

First saw problem when the kernel upgrade was applied to beta2 i.e. from 2.6.32-19 to -21
and am also seeing same problem in RC.

If I boot from recovery CD and complete boot to single user. I can recreate the problem by running the gdm startup ( /etc/init.d/gdm start) , get blank screen and am unable to switch sessions (Alt-FX).