My 2.4Ghz Core2Duo 4GB RAM (Ver. 10.6.6) MacBook hangs on every option in the System Preferences Panel ,also, I'm getting beach balls on the right side of my taskbar (Display, Time and Date, User & Spotlight). There's also some slow-down in a number of other areas. I've tried already to fix this by a general disk permissions repair, tried turning off spotlight (can't access), deleting unused startup items (just to clean up) and checked the activity monitor for wayward CPU addicts. I'm still stuck though after multiple Disk permissions repairs. Is there a point where I should find another method to repair my disk? Is there something I should be looking for to troubleshoot my issue?