A week ago everything was working fine. I use both Windows Messenger and MSN Messenger (not at the same time) for different purposes. All was hunky dory with both. Video and audio to Japan (I'm in Brazil) was dreamy - even behind my XP firewall. Then...
I woke up one morning about a week ago and downloaded the latest Windows Updates for XP. When I tried to connect with my employer in Japan after that, the same guy who I had a dreamy (technologically

Windows Messenger conversation with 2 days before,...the problems began.
Video came up fine but audio did not. My employer could hear me but just barely. Then everything would fail after about 30 seconds and I would be disconnected and signed out. This pattern has repeated itself ever since. Audio by itself works much better than when video is activated. This is on Windows Messenger.
MSN Messenger has audio problems as well now. My friends tell me my voice sounds like a robot and is vibrating to the point of unintelligibility. It's even worse when I try to activate the video.
I've disabled the firewall, ...nada. I figured that the new Windows Updates had something to do with it so I uninstalled, ...nada. I got so frustrated that I reformated my computer and reinstalled Windows XP and did NOT download the Windows Updates,...same XXXXing problem.
I'm at wit's end.
BTW, my audio in Paltal chatrooms has also suffered greatly since as well. And...Yahoo Messenger, which I use to talk with my folks back home in Canada, has problems with the audio when we activate the webcam. The audio by itself works fine. Both audio and video were dreamy before.
I'm thinking that there's some issue with my server that has to be dealt with, or maybe a port that has to be opened, but really have no idea.
Suggestions?
HH