Shoutbox

Hhhm, I have a diferent set up to you, but I have to mute my microphone to get rid of a loud whistle.  The other person can still hear me fine, just does not come out of my speakers anymore.

Does MSN Messenger use any kind of noise cancelling technology?  I have seen this before with noise cancelling, that is why you should try turning ya mic back up and mute it instead.  It might help.