Hi, new here I was noticing while I was plugged into my XP system charging that the touchscreen would go haywire, if for instance I was trying to pull up a menu it would get very twitchy or if I was in settings trying to open something or even on the home screen and I would touch something... the exact wrong thing would highlight and try to open and if I unplug the problem would just stop. I also have a Vista system and I have no problems at all when plugged in. Maybe it could be the cable but I have no idea. Any help would be appreciated. Edit: This happens either mounted or unmounted.