Thanks for trying richie. I just reflashed with 2.2006.51-6 and it's identical In fact i've noticed there's a slight sensitivity issue in the top left corner as well.

Oh well, at least it's better than it was but Nokia really, really need to improve here as devices with faulty touchscreens is not acceptable in the long term. I expect perfection - no dead pixels and an accurate touchscreen over the entire surface area isn't asking too much, is it?!