Ok I dont think I have a problem with the hardware, but it seems that powerbookmedic has been pretty slow in replying any questions lately, I just hope they help me on this one. Anyway my problem is that I cannot shut down or log out, it just gives me this spinning rainbow disk that would last forever and I would end up holding down the powerbutton for 5 secs. the problem usually occur when I use netscape browser, but now it seems to occur on Safari browser, and I am now forced to work with IE. Well that sucks! I don't know, but is there anyone facing thesame problem? I have a Powerbook G4 titanium with 667 mhz. Any suggestions anyone or am I alone on this one again???