Okay this isnt the first time this has happened, but this time its even more strange .. I have a mac intel 10.4.11 that wont go pass the grey screen with the apple logo, and the spinning wheel that just keeps spinning round and round and round . I thought that i just had to wait, but after a few hours i got tired of waiting! so i putted in my installation disk and tried the whole disk reparing utility thing. but that didnt solve my problem. ? and the strangest thing is when i turn my mac on, it makes this really weird sound, almost like a metronome clicking continuesly so what do i do now?