i have a brand new imac and i am having some problems on a few web sites, not all websites. when i try to make the video full screen it doesn't work. for example, if i go to www.theahl.com i can't make the game highlight clips play on full screen. but if I go to www.whl.ca, i don't have a problem. They both go full screen on my husband's pc. i made sure adobe flash player was updated.. any thoughts out there?