Hi, i just bought a G4 Ibook second hand, when i first got it it was freezing just the same as amys, after erasing and re installing it was still doing it..... so i took out the ram, as the person who sold it had just added extra. Its seems to be fine now, its not freezing but its not very fast and sometimes even when its performing a simple task the multicoloured wheel starts to spin, and sometimes the mouce jumps.... do you think the ibook is too old or faulty, shall i give it back or is this normal? if anyone could shed some light? im abit of a novice... thanks!