sound problem

[kaunter]

I could use my ts perfectly until one day.I looged in to my teamspeak and then it started repeating that ''link engaged''.I blocked my mic and took it out of my comp.Joined my clan server again and (only headphones) and again it started repating that ''link engaged''.(few times).When i talked then it started repeating my words(but they werent clear.I checked settings , activated local test mode and spoke into my mic and it started repeating my words until i deactivatd it.Some1 plz help me with this.(NOTE:Hwen i talked in MSN messenger with my mic the sound was okay)!!!!

[m&m's]

sounds like the mixer setting "what you hear" is checked in the recording section of the mixer