I went to switch users and the cube rotated to a blank blue screen. No menu bar, no dock, won't respond to cmd+opt+esc or shft+cmd+q. However the job i was running on the other acct is still going because the disk activity on my external drive is still goign. it's been like this for 2 hours and I dont' know what to do. I can't shut it off because that job is running. Is there some way of getting it to switch back the other acct remotely or another keyboard shortcut? From what I can tell though it wont' respond to keyboard shorcuts but the comptuer isn't "frozen".