What's the best thing to do if the OS X Performance Update hangs?

What's the best thing to do if the OS X Performance Update hangs? I closed all applications and then chose to install the Performance Update that was released this week (October 16, 2009). Upon rebooting I get a blue screen with the gray and black waiting circle. Is it safe to just hold down the power button until the system shuts off and the restart?
Asked by: Guest \| Views: 336

Total answers/comments: 2

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Guest [Entry]

If Bluetooth is not available, try doing an SMC reset. It might sound like voodoo, but it worked for me. See support.apple.com/kb/HT1411

Guest [Entry]

"The performance update was to do with the issue where hard drive read would stall. I don't see how it could have affected the bluetooth.

However, turning off the machine during boot could have resulted in damaging a file related to bluetooth.

I would recommend restoring your Mac to a backup (Time Machine, or otherwise) taken just before you installed the update."