Ok guys I've done some research and I read that the more page outs, the more ram you may need. Since my last re-start, which was a few days ago, I am showing on iStat that my page out is 270 kb/s (4.92 GB). Should I be going by whats in the parenthesis? I have a 2011 15" MBP with 4GB of ram. I am thinking about getting 8GB because my computer has been a bit sluggish while uploading videos to youtube, surfing the web, MS Word, and iPhoto at the same time. I have been getting the beach ball a lot lately. I know ram is really cheap and it wouldn't hurt getting more. However I don't want to spend $50 if I don't need to. Any info would be appreciated, thanks!