Battery lifetime is only 1:20
I have a MacBook Pro from april 2011, upgraded to OSX 10.8.2 from 6.8. Battery lifetime is only 1:20, fan is running all the time and Machine (CPU) is getting hot. Is it something I can do to get the 2:30 hours back an a silent MacBook?
MacBook Pro, OS X Mountain Lion (10.8.2)