First of all, my wife and I have the same phones, both infuse, bought the same day. I can connect her's to computer via usb and computer immediately will recognize it as an additional drive, including the sd card as another. I am able to do anything I want with it (with or without debugging enabled). So drivers and everything else is ok. When I plug mine in, (same cable, same port), it only charges and does not even acknowledge it is there, even in device manager, not there, with or without debugging enabled). I have disabled my Lookout and AVG. Any suggestions on changing any of the setting on the phone that I could have tinkered with and not realized it? I update mine regularly over the air, but she does not. Would that make a difference also? Any help appreciated. Thanks.