I am using MSN Messenger 6.2 on a cable broadband connection in Budapest, trying to have audio conversations with various users in the UK. It has worked satisfactorily for over a year but for the last 10 days the people at the UK end have not been able to hear me properly. They hear my speech broken into a series of rapid pulses, and I get comments like "you have a sore throat", or "you sound like the robot on Hitch Hikers Guide to the Galaxy".
I have heard the same effect when trying to use MSN over a 9600 baud mobile phone link, however, I know it is not a bandwidth issue in this case because I can transfer zipped files to and from the users at least 10 KBytes per second in both directions.
OS is Windows 2000. I have tried uninstalling Messenger, downloading and instaling a fresh copy but that hasn't helped.