USB voodoo on a QS733

Posted:
in Genius Bar edited January 2014
My QS G4733 is misbehaving. Has been since day one. Sometimes it freezes at shut down, sometimes not. Sometimes my Compact Flash reader works, sometimes it doesn't. Sometimes iTunes freezes while loading, sometimes... well, you get the idea. The CD eject button on the keyboard sometimes locks up the whole system, too.



The problem seems to be in the USB bus. If I unplug a USB cable from the computer, it will often set things working again.



Any ideas what's going on here and how I can fix it? <img src="confused.gif" border="0">
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