I'm in the same boat as you - I think: mine will chime when connected to PC but Windows message keeps saying 'USB device is unrecognized'. When connected to charger source, Touchpad says 'Device may not charge - voltage/current may be less...'.
The 'feel' on the micro-usb side is slightly loose. I am awaiting an HP-certified cable with the silver-dot although I doubt that will fix it. Their tech support is fixed on telling you to use the HP certified cable as a recommendation.
Now here's the klinker:
I already sent my TP back once under warranty to the repair-depot and got it back, rather quickly (7 day turn around from CA to TX to CA). All they did was erase all my data and update to webos 3.05. I don't think they touched the USB connector, nor tested it.
I'm getting another empty box/pre shipping label, etc so that this can be done again. Anyone wanna take bets on whether or not the 2nd time around it will work? I have a touchstone to charge but without USB to PC, can't install preware, apk's or more importantly CM9.
Very discouraged.... Synchron.