Heh, I went back to lurking the forums for a while, but now a really random issue has arisen on my Mac that's confused the crap out of me. I have two accounts on my computer. One is my main account and one is a friend's. They're both admin accounts. This friend used the computer two or three days ago and left his account logged in. When I wanted to use the eyetv programme I have, it said I couldn't as it was in use on his account. So, I decided to just restart the computer and log him out by using my admin password to force a restart. All was well and I happily got to use the eyetv. But today, I put the computer to sleep and left for the day. This friend was not over at all (to the best of my knowledge). Yet when I got home and tried to connect my eyetv, I got the error message again and lo! His account was logged in So the question is: can the Mac have a bout of accidentally logging in another users account and opening the programme but then allowing it to go back to my account without me noticing that the other account had been logged in? OR is it the case that my friend has somehow made himself a key copy and forgot to log out after secretly using the computer?? (Definitely confusing).