Hey everyone. I've recently been having a lot of trouble with OSX. It's so slow it's almost completely unusable. I've had this install for a couple years now and I figured I would just reformat the computer. This all happened after installing Firefox 4, Little Snitch, and Adobe CS5.5. I have no idea if any of that has anything to do with it but something major changed after that. (The CS5.5 is a trial from Adobe, no piracy here, going to expire soon.) Anyways, I was wondering, if I just reinstall OSX without reformatting, what will I lose? I have a time machine backup so I'm not too concerned. I'm really not in the mood to reformat and set everything up again, so if I could do a new install and not lose anything that would be amazing. I'm assuming it just rewrites the system files right? Documents and apps would be safe correct? Thanks!!