My early 2011 15" (high-end) MacBook Pro has been sluggish for the past 3-4 months for some strange reason. I've taken it to the Apple store 3x and it passes every test that they run on it so they won't fix anything, except for the superdrive b/c that had crashed. It now takes around 15-25minutes to open a 7mb Excel file, just to take the screen shot attached took 2 minutes, opening the screen shot was 1 minute and opening Safari was 3. This is getting ridiculous. Anyways I know MKVtoolnix is running which does take up some speed, but the fact that it's only 6% cpu proves it's not much. I mean holy crap I have 8gb of ram and it says 6.11gb is inactive why isn't it even using that? Could this be a logic board issue? Does anyone have any suggestions? I've reset PRAM and SMC (yes I know they don't pertain to my issues) I just can't seem to figure this one out.