Hey Guys, Lately my Macbook has become VERY sloppy. It sometimes leaves me hanging for a solid 20 seconds or more, when I'm doing basically nothing special. Then I hear once in a while an OS X sound like a glass 'blip' or something, is that the sound os x makes when your HDD is failing or what? I checked my drive with disk utility and about this mac (smart) and it says everything is ok with the HD. What could it be? When looking at activity monitor everything seems fine, though sometimes one core is maxed for no reason at all (since I have nothing running) and the fans go nuts. Thanks Ps: Will the Time machine backups back up my entire drive and make for an easy reinstall in case of HD failure, or should I somehow get another HD and make a SuperDuper! backup?