I've noticed lately that my PB (bought it this past August) has been a little buggy acting. It quit going into "sleep" mode automatically (I've done all the checks on software installs, peripherals, etc. and can't find the cause), sometimes applications won't launch and I'll have to restart-these are the two main things I've noticed. I've run disk utility several times-repaired permissions, etc. It's found no problems with the hard drive at all and SMART is verified. Last night I ran TechTool Pro's surface scan test and it found 10 bad blocks and thus advised me to "to reinitialize the drive with the option to zero all data". I'm not sure which utility to trust...should I really worry about it if Disk Utility says everything is ok? Also, would Disk Warrior help any? Would an archive and install help the situation any? Thanks for any and all help!