[ubuntu] nVidia Graphics Driver Problems

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http://ubuntuforums.org – Hey Community, I booted up today in the standard 'Ubuntu' environment and my Unity desktop is gone. The window effects are still working, but the side bar doesn't come up. When I log in to a 2D environment, the sidebar and windows behave well, but the compiz effects don't work. I'm thinking there's an issue with the nVidia drivers. I've tried all proprietary drivers and I'm currently booted using the recommended 3D driver. GPU: nVidia 8800GTS 512mb I have 2 other machines that seem to be working fine, all of which are updated. Any ideas? Thanks guys, Anthony (Hardware)