i am into my first and only problem with mac that i'm sure will have a simple fix. i was on the phone with tech services and they ran me through a bunch of things....disk repair and what not. no fix. all of a sudden my browser and email lock up. email will just show the little progress circle next to 'inbox' while it checks for new mail endlessly and the brower will be stuck halfway through loading a new page. HOWEVER, i can be listening to itunes radio at the same time so obviously my internet connection is still valid or i couldn't have streaming music right? i have also had it lock up WITHOUT itunes on as a test. any ideas? ultimately the whole machine locks me out and i get the spinning rainbow wheel thing and i have to restart.....4 times this morning. not good.