Screen makes the clicking on the top part here, but it disappears the next day for another three or four days.
I also found that pressing hard with my thumb on it (with the screen open and the other end of the N900 supported by my other hand) gets rid of the problem for a week or two (or if you're lucky like me, a whole month).
Same issue with the QWERTY assy, thinking about replacing it by myself.
Other than those, no issues at all