I have 85GB free on my mac yet at the moment it's not even letting me download a single photo or anything. When I try it says "Safari cant save the file". I have over 2GB free of memory. I don't get what the issue is? Sometimes when I restart the computer I can download a few things but then it doesn't let me download anymore. Also, sometimes it comes up with that black message "You need to restart your computer" as soon as I log in. And sometimes when I restart the computer the log in screen doesn't load. At times I have to restart it like 3 times before I can even get into the log in screen. I've been having these problems the past few days. Should I start backing up everything on my mac while I can? It's a Mac OSX 10.6.7 with a 2.4GHz Intel Core 2 Duo processor. Please help!