OS X 10.8.3 Released

[L33]

The 10.8.3 update is recommended for all OS X Mountain Lion users and includes features and fixes that improve the stability, compatibility, and security of your Mac, including the following:

- The ability to redeem iTunes gift cards in the Mac App Store using your Mac's built-in camera
- Boot Camp support for installing Windows 8
- Boot Camp support for Macs with a 3TB hard drive
- A fix for an issue that may cause Logic Pro to become unresponsive when using certain plug-ins
- A fix for an issue that may cause audio to stutter on 2011 iMacs
- Includes Safari 6.0.3

For detailed information about this update, please visit: http://support.apple.com/kb/HT5612

Download 10.8.3 Update
Download 10.8.3 Combo Update

 

[L33]

Despite this update, and an SMC update - I still have power management issues. You'd think a £2000 laptop would be able to handle waking/sleeping and changing screen configurations.. but nope.

Can someone test something for me, if you have an MBP on an external screen. Put it to sleep, then wake it up and then try put it back to sleep again straight away.

Just tried this and works fine for me (rMBP). Guessing you've already tried an SMC & PRAM reset?