i had a weird issue today.
plugged an AC/DC adapter into my car cigarette lighter. into that I plugged in a USB charger and everytime I connected it to my phone, the phone's touchscreen basically didnt respond. tried two cables and the same thing.
I came home and rested my evo in a desk charger dock that also had an external battery charger (with a low % battery in it) and for the first time ive ever seen, my computer gave me a warning that it had shorted the port and either i needed to disconnect the cord and click 'reset', or the port would be disabled.
Huge WTF here.