I'm not sure if I'm the only person this happens to or not, but whenever I charge my Droid RAZR or even my old Droid 2 Global, I absolutely cannot use the touch screen. It would start typing on its own, sending unfinished messages, calling people, etc. I've tried my aftermarket "Verizon" branded charger, my original Motorola charger, and even different sized cables, but nothing seems to help.
Here's the "fix" I found. The other day, I had my RAZR charging and wanted to listen to a song through my band's PA system. I plugged the phone into the system (consisting of a 1400 watt amplifier and two 215s), and what do you know, the touch screen immediately stops acting up. Since then, I've tried connecting my skull candy ear buds while charging the phone to see if they do the trick, but they do not; however, my powered computer speakers work just as well as the PA system.
I'm wondering if anyone else has looked into this issue, or has even had this problem? My findings seem to point towards the "glitch" being a grounding issue inside the phone.