MSN Messenger - video works but not audio!

From: reuben (anonymous_at_discussions.microsoft.com)
Date: 05/30/04 

Date: Sun, 30 May 2004 14:03:25 -0700

Hi,
I was wondering if anyone could shed any light on why I
can't have an audio conversation with my friend on MSN,
but we can do video conferencing no problem. She can have
audio conversations with other friends, but with me she
gets the message "the computer you're trying to reach is
having problems...." and I get the message "the audio
conversation has ended".
I do not have an ICF enabled.
I am on a wireless LAN.
Thanks!
Reuben.