Same problem (quite annoying) for me in Ubuntu 11.10 under Unity. Affects from time to time the "ALT+TAB" behavior (the functionnality still works, but the ALT+TAB window is in the background instead of "on top" of the other windows).
Same problem (quite annoying) for me in Ubuntu 11.10 under Unity. Affects from time to time the "ALT+TAB" behavior (the functionnality still works, but the ALT+TAB window is in the background instead of "on top" of the other windows).