After upgrading to 12.10, I see no side bar or top bar. If I do unity restart, then Compiz crashes (I get a window telling me that and I can send an error report).
I have ATI mobility Radeon 2400 and I have uninstalled the "fg-something" extra drivers (because I had the same problems with that installed).
Also, in case it's related, the display resolution is no longer set to the native resolution of the screen.
How can I get the launcher and top bar to load properly at startup?