I just bought a VIEWSONIC TD2340 from NewEgg and for the life of me I cannot get the touchscreen to work reliably. Calibration is buggy, simply pressing the first point will often time skip another calibration point or exit completely. When it does go through, it simply will not work. After moving a window over to the screen when I attempt to do anything, the window starts dancing around/resizing and other odd behavior. I cannot get I cannot get it to work. When I plug the screen into a PC though, no problem.