I have searched the forums already and I didn't find much about it... Does upgrading the RAM to 4GB affect the performance? I have 90GB of storage left (20GB Boot Camp partition and lots of files on the Macintosh HD)... if I upgrade my hard drive to 250GB and transfer files to the new one... will it affect the performance too? I just want to know the cheapest way of making it slightly faster since it has slowed down a bit. Oh yea... sometimes... when I'm using safari... it will like have the spinning wheel for a moment when I scroll down.