Hi, I am new to the forum. I got my 8830 on 11-26-07, and almost immediately had a problem with the trackball. It is acting erratically almost like as if I had made a thousand vertical and lateral moves. It just sits there clicking away for a few minutes and then most of the time when I go back I am ok. However, sometimes it starts the erratic behavior again immediately. Do you have this problem as well as the one you described?