ive had my powerbook 12" 1Ghz for about 3 months now and i used to have a mac 3 or so years ago and then i sold it for a desktop pc and now have this powerbook and ive noticed when i plug a USB mouse into it or when i use the Bluetooth apple mouse that i bought it seems to lag, like when i move it around the screen theres a short delay between when i move the mouse and when the cursor moves on the screen, but not when i click, when i click it does it instantly like i expected the mouse movement to do... I never had this problem with my previous mac or the one i use at school(powermac g4) is this problem common with all powerbooks? or just the 12"? how can i fix it bcuz it really bothers me sometimes, other than that tho i love my laptop!!