My friend recently got a PowerBook G4 1.67 from eBay. When he tried to put Leopard on it (retail family pack disc) the install would freeze either during the actual install or during the formatting. My friend talked to someone and was told that that logic board was failing and he also kept getting kernel panics. He sent that one back, but today got an addition 1.25 PowerBookG4. Tiger installed fine, but would get kernel panics sometimes (I was using the computer) and it would also randomly freeze up requiring a hard restart. When he got home from school, he tried to install Leopard on it and he kept getting the same problems as the others. Is something small just wrong such as the PMU or PRAM? Or is it something more serious like the logic board in both cases? Thanks for any help!!!