So today i was just chillin, talking on adium, and my screen goes gray tinted and i am told i have to restart my computer. I have just updated to the latest version of leopard. Here are some things that have happened in the past few days that could have caused this. Finder has been crashing, and everything that is open, whenever adobe flash player 9 loads. I downloaded a large (2GB) disc image of a game, and i got the message "opening this may damage your system" which i've gotten in the past but it doesn't really damage it. I am pretty sure it is not a hardware problem, since i just got a new logic board and had everything checked out about 6 months ago. Is there anything quick and easy i can try to fix this problem or is it gonna take some time and a professional? also, i run leopard on a powerbook G4 i ghz titanium, which is cutting it close but i haven't had problems yet. help?