I've upgraded from 12.04 to 12.10 and compiz and/or unity are constantly crashing rendering my computer useless (no top bar, no dash, no window decorations). I have just discovered that when I login with the guest account everything seems to be working OK. I've been through all the threads I could find and haven't found a resolution. This isn't Nvidia related (I am running on a System76 laptop with ATI Radeon). Is there any way I can go about isolating the problem and restore my user account?