Anyone else have screen issues with a different brand charger? I use a blackberry at work and it seems when I use that one, it is the only time I lose all screen functionality. It starts going haywire. If I touch the A key, it will select the N or something completely off the wall. If I unplug it, wait about 60 seconds, it works again. Wonder if anyone else has an issue with other brand chargers? Going to toss this one but thought I'd let people know in case they run into the same issue.