This stable release has some bugs - and probably shouldn't have left beta quite yet.

there are some 'icon' bugs - in gnome-shell, and i have noticed in firefox the auto-scrolling icon doesn't display properly.

i believe bug reports have been filed in both cases though...

i use compiz with gnome3 - and haven't noticed any problems aside from firefox (which is minor - i would actually like to disable that icon anyway..lol).

cheerz