Sound Problem?!

Hi there, I have a problem with my sound on my computer.

What's the situation?
Well I had Ventrilo 2.3 runnin and i also clicked on ventrilo 2.1 and started to talk in both ventrilo! And sudenly I had an Echo in my sound! So after stopping what kind of sound whatever you hear sound comming after it.. so if someone says hi on ventrilo it repeat itself also if i click once you hear it twice..

So what did i do?

Reinstalled Ventrilo no succes.
Shutting down my audio hardware reboot pc and turn it back on no succes ://
Also plugged out of my headset no succes

So anyone?

I have a 3 set of Logitech subs en tweeters.

My audio hardware is C-Media High Definition Audio Device
Here are some screenshots.

http://home.planet.nl/~hof01447/sc1.JPG
http://home.planet.nl/~hof01447/sc2.JPG
http://home.planet.nl/~hof01447/sc3.JPG

I dont want to format :/