hey i am thinking about reformatting my computer because it has been acting up. i am a new mac user and i probably did some weird stuff with it. i used to use limewire and i know that that was bad for my computer. well anyways, i burned all my pictures, documents and movies onto dvd disks to back them up. is there anything else i should back up?? like my microsoft office, photoshop ect? and if i do do it, do i just copy it from the applications folder? and is there anything else i should do before i reformat?