I've got a weird problem that I haven't seen anywhere else, and I'm hoping you guys can help me with some ideas. I bought a 2008 MacPro dual-2.8 ghz 8-core tower last month and love it to death except for one frustrating problem: The USB on the tower is giving me hell. I can connect the keyboard to it, no problem. I can connect peripherals (an iPod, compact flash card reader, etc.) through the keyboard port, no problem. But if I connect any type of removable media to the ports on the tower itself and attempt to write to them, my computer will seize up. But if I remove the media without ejecting it (which I cannot do, because the system has seized up) then everything returns to normal after giving me a few error messages, such as the typical "don't ever do that again" signs and one with the iPod that says it could not write to the iPod. I can pull files off the iPod and compact flash card without a problem. It's when I try to write to either one (such as syncing the iPod) that the problem emerges. I have reinstalled the system software twice (once through an archive and install; the second a full hard-drive wipe and reinstall). I've run the hardware test (the extended version) and it didn't find a problem. And the wife is coming down on my ass about it because, as you might imagine, if she can't sync her iPod then everything else the computer does well is irrelevant and it's merely a $2,700 end table. I'm normally able to figure these problems out on my own. But this really has me stumped. Has anybody else run into this problem? Does anybody have any ideas for fixing it short of calling Apple (which is my next step)? Thanks in advance for your help.