I have been browsing for over a week how to fix this problem, sorry if I could not find a solution on this forum thus making this post a repost. I purchased my macbook Late 2008. It is the 2.0 GHZ Unibody model. It has been working fine up until the past couple months. It seems like things that it used to do easily is now taking more effort. Today was the turning point when I was editing a video in iMovie 09'. I was converting a basic 11 second clip so I could speed it up. It usually took me about 30 seconds or less to do that judging from recent videos I edited months prior to this. I waited about 15-20 minutes and it was still converting the 11 second clip! I downloaded a temperature measuring program. The top temperature reached 90 degrees before the fan started to kick in. I will include a picture of the consistent temp after the fans kicked in. The only thing that I can really think of that would do this is recently I have been plugging in my MacBook to my 32" LCD TV via the DVI-HDMI cables and watching 100s of episodes of Television shows stored on my Mac HD. I have reset the SMC. I wouldn't be worried much about this, but it is the fact that my mac can't do the simple things it could do several months ago. I will also note that it gets very hot in the upper center (Right under the macbook logo or under the F6 and F7 keys.) Another thing you might say is that I was doing a process which involved rigorous work on the CPU, but just yesterday I was browsing the web and it heated up again. I check the on the CPU and RAM and saw that the RAM had more the half-a-gig free and the CPU had over 80% Idle.