[speck]

Mario - did you try 'aligning the screen'? It is under start->settings>system tab->screen.

I was having a lot of problem with the corners of the screen until someone told me that the screen was originally 'aligned' for the stylus. By re-aligning with my finger touch - it's gotten better. It's not great, but it's 100% better than it was. I used to have to pull out the stylus most of the time to get the 'x' in the right corner, now it usually works with my finger in one or two tries (or three).

It's worth a try if you haven't done it.