I'm running Windows 7 build 7100. As the title suggests, my microphone is always on. It appears to be acting like it's in listen mode, but it's not set to be. I've deca-checked that the mic is plugged in correctly, and it appears to be. The drivers (Vista) are installed and appear to be working correctly. I play a lot of games that require a mic, so I would prefer not to be turning it on and off all the time (and it will do it in game when I need the mic, but hearing the feedback is terribly distracting). I didn't have this problem with this setup when I was running XP several days ago.
Any suggestions?
(Note: Some screen shots have been resized to remove white space.)
Edit: The games (L4D, TF2, WOW, TeamSpeak mostly) are all set to push to talk. Nothing should be voice activated.