I'm worried about my new 12" PB's health (512 ram). Can anyone help me?? Here's what it has done to me in the past week: 1. Frozen after opening its lid from sleep (black screen with rotating color-ball thing only - utterly unresponsive). 2. Go slow: like play a bit of an iTunes song then pause, then bit more, then pause. and everything else taking ages.... until Frozen again! But while saving a pages doc (data lost - like being on peecee again!!!) Mostly when it does funny things like this it makes that tick-tick-tick-tick-tick-tick sound, like computers do when they think... but fast & constant). Then sometimes the tick-tick gets VERY LOUD and even SCREECHY before a freeze. I can't possibly bear to be without my PB while it is sent away for a week to be analysed by the no-brain shop that sold me... I have a mammoth assignment for the next six weeks.