Hello everyone! I have a 15" MBP. I am running Mac OS X, 2.53 I5, with 8GB DDR3. Just recently, it is having a difficult time loading youtube videos, and just maneuvering from app to app and opening things up. I get the circle time icon, and it takes it time to load things. All of my software is up to date, and I have all ready checked and repaired the HD with Disk Utility. My other MBP is not doing this. Any recommendations? Thanks guys!