I have an i3 2330 & running 10.7.3
Two Issues that i can't shake.
1. Fan is always going low. In Windows it seems it is stopped unless it's working.
2. Wifi doesn't work after sleep. I have to Turn off the Wifi, then turn it back on for it to work.
Have you tried the SSDTs two posts up?
My fan actually turns off occasionally now.
Not as much as in Win7, but better.