I've just scanned how my n800's screen is mounted and noticed one thing. If you look into the gap between the silver cover and the display you'll notice that there is a metal frame around the lcd, keeping it tightly. Tightly everywhere around the display, except for where the problematic sensivity area is located. The frame on the right edge of the lcd is loose and it's bent a bit. There is a gap between the frame and the lcd surface an the gap is biggest exactly where the sensivity is worst. No idea whether this has anything to do with the sensitivity issue.