IMac 2011 & 10.8.5 - now bluetooth and sound dead!

Hello,
i upgraded my 2011 iMac from 10.8.4 to 10.8.5 and after the reboot bluetooth and sound are gone!
So I did a PRAM reset, now I have the startup sound but still no sound or bluetooth under mac osx? Magic Mouse still works, but without scrolling and so on... So it seems 10.8.5 is really messed up!
Any ideas to fix that?

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, or by corruption of certain system caches. 
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled on some models, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including sound output and  Wi-Fi on certain iMacs. The next normal boot may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Test Bluetooth while in safe mode. Sound won't work. Same problem? After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

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