I have an 08 mbp. Was awesome for about the first yr. Slowly it kept slowing down to the pt where I just open up a browser like chrome and the memory fills up suddenly. I try backing up my very important files so I can reformat it but as soon as I try pasting even a 1 gb file it says memory full. I have 2 gigs and that was more than enough for my use. Please give me some advice on what to do. I want to ATLEAST be able to back up my files.