Seems there is a problem with older Valve Games like Counter-Strike, Half-Life and Day of Defeat.
Upon starting those games the Geek Window turns black and WP stops counting keystrokes and clicks but still counts traffic and uptime.
Same phenomenon as in this Thread
Still an issue with 2.0.4
Seems to affect all games running the GoldSrc Engine.
Noticing both issues are only for you and i still play the above games on a W7 x64 box i would say its something on your side.
RDP is never great with apps that update dynamically.