I plan upgrading my 2.4GHz Late 2008 Aluminum MacBook to 4GB of ram and I also want to throw in a 7200RPM hard drive to replace the current stock hard drive. I was just curious what the best choices would be for Ram and a new 7200RPM hard drive? Right now I am thinking about going with this 4GB kit from crucial: http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=2E9B2B4EA5CA7304 Anyone had any problems with that Crucial ram? I have always upgraded my Mac lappys with Crucial in the past and never had a problem. (Knock on wood) I am also not sure which HD to go with. Basically I am just wanting to make sure and get Ram and a 7200RPM hard drive that is completely compatible and have no problems working with a MacBook Aluminum. I have heard that some Ram upgrades have been causing freezing and some 7200RPM HD upgrades have been causing massive vibrations to occur in the MacBook. I am also hearing that there might be a new 500GB 7200RPM Hard Drive coming out soon, if so, how much more will it be then a 320GB 7200RPM Hard Drive? If anyone can give me some advice that would be great! Thanks in advance! Cheers!