Hellp. Thanks for all your suggestions, but my problem still exists! Now when I restart my computer I get that grey apple logo on the screen for about 1 minute, then my system reboots itself! It does this several times before it actuall progresses to the login screen. Also, my friend has a copy of diskwarior and made a boot cd for his computer (same powerbook as mine) and I tried it on my system. It booted fine (but too about 10 minutes to fully startup from the cd) I rebuilt the directory on my mac os x volume. Upon restart I found my system to work properly! BUT, since i did a new install of os x like someone suggested to me, software update had a million updates to download. So i installed all that junk (quicktime, security update, bluetooth, etc) and restarted the system. After the reboot my system is messed gain (same as before). This sucks. I am too angry for words. I actually want to beat the sh*t out of this garbage. Sorry about my language here, but I am just so mad.