Any tips?
Running Intel Core 2 Quad x64 ubuntu precise 12.04 Dell OptiPlex 760 nvidia graphics driver
UPDATE:
Unfortunately I uninstalled Ubuntu...
Just couldn't deal with the incompatibilities and issues and I needed to start being productive again... back to Windows 7 for me. :-\
UPDATE (4/17/2013):
So it sounds like this issue can be caused by a variety of different things and no 1 single answer is correct.
Too localized?

11.04. Get9.10or something and if you want to use11.04or11.10make sure that you getgnome-panelwhich is the closest thing to gnome 2 and significantly reduces the grief of compiz. I use Ubuntu11.10withgnome-panel. I am a mathematical programmer and with this config I end up using only 500MB which is 1/16th of my RAM. – drN Oct 28 '12 at 13:57