Hey all First post here, don't really like coming onto a forum, and asking for help straight away, but this is really doing my head in. My Macbook runs fine usually, but it very regulary randomly comes up with the 'spinning beach ball' icon instead of the mouse, even when I'm browsing the internet, it doesn't freeze, that little icon just comes up, and I can't click anything, but I can still navigate into the corners of the screen, and expose etc still works... I have upgraded to 4gb RAM to see if this would fix it, but did nothing. I have no idea what to do to be honest. Thanks a lot for any help! Cheers.