T30 Left mouse button

[Jammasta]

Has anyone had this problem with the left mouse button on the T30 just stop functioning? Both the top (red) and bottom left mouse button doesnt work. When I plug in my USB external mouse, it works fine. The Right mouse works fine. I've formatted Windows XP and reinstalled it, which didn't work. I've bought a new T30 keyboard and that didn't work. What might be the problem? I hope it's not the Motherboard. Anyone have a solution for this problem? Thanks!