Has my iMac been hacked?? I didnt think this was possible!! I use several freeware apps to maintain a pretty secure system. When i load firefox - finder opens. when im online new windows bounce up - but not pop ups , my bookmarked pages. Then the sound is up down left right grrr i feel like i have no control. Ran extened virus scans. nothing come up. New apps open randomly and close just as frequently. these shows last in 5 min outbursts then every thing is fine. i have had approx 7 outbursts in 3 hours?? Please help!