To update or not to update? I've run into a bit of a problem today. My Messages on my OSX Lion (beta) finally deactivated it today. I'm faced with updating my OS some time this week just so I am able to use that feature again...idk how long it will take apple to put out another OS update like Bobcat or something...And I don't want to shell out another 20$ just for one single app and make my machine run slower and suck the juice out of it. I don't want to use iChat because it just isn't convenient...I liked to message directly to a phone number... My question is...If I have a separate computer, for instance my sister which has Mountain Lion, can I use her account to download Mountain Lion and install it on my machine as well? Thanks everybody.