OK so I am trying to get back into flying the A-10 because I cant wait for DCS to release their next A-10 sim. I have track IR4 but I am using the Track IR 5 software, it says its compatable. Anyways for some reason everynow and then I lose the function of my keyboard and hotas, kinda sucks when you were kicking ass on a mission and now lose control of your plane. I am also running Vista with all the updates. I have also been crashing to the desktop every now and then. Any help would be great....

I'd say your problem lies somewhere between something being unstable and something running in the background and stealing focus of the input devices.

virus or other system status monitors? (Overclocking and getting heat warnings or something?)