like most of u i love my ibook but i am concerned with a faint periodic buzz coming from the hard drive. when i check the activity moniter each successive buzz causes the data written to rapidly increase from 0 to something high and back again (this occurs constantly when my ibook is on). although it is practically unnoticable with normal background noise, is it something to be concerned about or am i just another noob who worries 2 much, id appreciate your advice thanks 
