Just installed lion update stuck grey screen with status bar

Just installed mountain lion update and now have grey screen, status bar that does not move with apple and spinning grid ball
Help!
Lisa

Hey Lisa,
I would try running through the suggested troubleshooting steps in the following article, it'll go over a gray screen on startup error:
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/TS2570
Welcome to Apple Support Communities!
Have a good one,
Delgadoh

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