i am using 10.8.2.
Truthfully i have found a lot more trouble caused by this os upgrade then benefit. There is even an issue they have with headphone/input jack not being able to switch to input mode because the software wont recognize it. I have been forced to use a usb external soundcard for everything. its a hug pain in the ass.
everything worked fine when i was using 10.6
There is a lot of issues going on that mac wont adress.