very difficult connection problem with ipod 4g greyscale

[squizzerls]

Hi all, I have a 4g greyscale ipod that I installed rockbox on a while ago, and it was working great - for a while. Now, rockbox still works, but my computer does not recognize the ipod at all. Ever. Not in rockbox as a disk. Not in the original firmware as a disk or in itunes. Not in disk mode. I've tried resetting the ipod, using 3 different computers, using another cable... The ipod still charges when I hook it up by usb, but no computer will recognize it. The manual and searching the forum has not revealed any answers so far. Please help!

As I said:
4g 40 gig greyscale clickwheel ipod
windows xp home sp2
usb

[saratoga]

If it doesn't work when its in the Apple firmware, theres probably something wrong with the hardware, the Apple firmware, or you PC.  

[squizzerls]

I don't supposed there's anything else to do but send it in? Will Apple even look at it with rockbox installed?

[zajacattack]

Give a different USB port a try.
Give a different computer a try.
Give a different cable a try.
If ALL of these fail, then it is most likely the iPod's fault.

[squizzerls]

already tried another usb port and several different computers, if the ipod is still working normally besides the connection, is it probably the cable or the bottom connector port thingy?

[Chronon]

Try a different cable.  I have had 2 cables go bad on me in the course of my iPod ownership.