Hi everyone I am experiencing that my Mac randomly locks up for like 30-60 seconds, apparently varies a lot in length, and this is really starting to kill me! I read a lot about this on the net, but none of the fixes i have read about seems to work at all. My setup is: MacBook Pro (Coconut says age 13 month), so must be the late 2008/early 2009 model. 2 GB stock RAM exchanged with 4 GB kingston. Stock HDD exchanged with 500 GB WD disc. Snow Leopard with all updates. Tried fixes: Uninstalled DIVX Repaired permissions Reformat None of above had any effect. As far as I can tell from reading on the net, the problem may have something to do with 1.7 EFI firmware update?!?! Please help!