Comment 12 for bug 874862

+1 here, Sony Vaio VPCSB series - ATI Radeon 6470M - Ubuntu 11.10 - open source drivers. Same problem, screen flickering after rotation and can't move windows to next desktop with keyboard shortcuts (ctrl + alt+ shift + left or right).

I wonder if Canonical test these things before realease a new version, this bug isn't hard to reproduce at all...