This just started yesterday latest version of safari will freeze up the computer w/latest version of snow leopard. I can shut down all apps by command tab but thats it frozen. Have to hold power button down to restart computer! Trying to send a message through apples mail, and today right away filling out a simple form, not sure if it happens when I press return or use the number pad....Any ideas? Note-last week I couldn't mount dvd's...still can't, called apple support I'm still under warranty but there are bills I pay online.