I have a Lenovo x61 tablet and have been using the vga port for a dual monitor setup for months with no problem. then one day it just stopped working and the 2nd monitor would just stay in sleep mode. the mouse goes over into the 2nd monitor, but i obviously can't see it. i tried connecting to another monitor and i get the same problem. i've installed the latest drivers for both the dual monitors and video card for the tablet. any ideas? this is driving me nuts.