Try using your wall charger when you get home, see if that seems to charge it. It should charge from near dead to full charge in ~2 hours if not used. I would have guessed that the monitor usb would have been the culprit, as the longer the voltage has to travel, the lower it gets. Try downloading BatteryLeft and set the widget to Voltage, see if it increases at all when you plug it in to the computer and then try it on the wall charger. Mine usually jumps up 100-200 mV when i plug it in. If it takes much longer than 2 hrs on the wall charger without using the phone while its charging, i would take it back for a replacement. Also, yes, even if you have USB2.0 on the computer, if you go through the monitor, more than likely it will switch you back to USB1.1 and kill your transfer rate. Transferring data TO the phone should be about 2MB per second, FROM the phone should be 6-10MB/s. Good luck