I’ve encountered the following bugs on my Mac Pro running 10.8. Feel free to comment on the bugs you’re experiencing.
- Incoming mail.app notification sound does not always play.
- Spontaneous wake-ups from sleep mode, fan runs at full speed. (I’ve turned off “wake for ethernet.” We’ll see if this resolves the issue.)
- Weather widget does not stay in one place in the dashboard. (This is a long-standing bug.)
- I could not register my account in the Game Center. I needed to register on my iPad. Only then did the Mac Game Center work.
- More frequent “beach balling” in Mountain Lion Safari than Lion Safari.