I'm running Windows 7 SP1 with Boot Camp on a 13" Macbook Air 2012 with 8GB of RAM.
Whenever I have the laptop plugged into my Thunderbolt Display, the computer intermittently locks up for a few seconds: my mouse stops moving or my current key sticks or does not type the key. This happens every few minutes.
This does not happen in Mac OS when I am plugged into the Thunderbolt Display.
This does not happen in Windows 7 when I am not plugged into the Thunderbolt Display.