I'm familiar with iMac G5 capacitor problem and all other usual Apple defects, but this one is new to me. I saw an auction of PowerBook G4 which works well except that it apparently has faulty ide controller, after some use disk speed degrades heavily and I guess the machine becomes painfully slow in certain tasks. I assume that atleast one Macrumors user has faced this problem and if so, is it fixable? Because it appears after some use I guess it's just another type of solder failure. The owner has used it with external firewire and now decided to sell or donate it.