Installed on my 2008 unibody Macbook. Seems to be stable thus far. Seems a bit nippier than its predecessor and anyone installing it might want to check software update immediately after (its now part of the App store application). It seems like a swathe of other stuff has been updated to be compatible. Also needed to update Air Display to keep using my iPad as a secondary screen and Trim Enabler to make Trim work on my SSD. I half expected it to baulk at the 8Gb of RAM I have iinstalled (the machine supposedly only supports 4GB), but it's perfectly happy. If anything untoward happens I'll let you all know.
The original 32 bit junkie now snorting pure 64. Sky Broadband, Wired, Wireless, VoIP, 1 Mac, 2. Hackintoshes, 1 PC, 2 HTPCs, iPhone, iPad, OS X, Windows 7
Rehab is for quitters