Usually you don't have to update things like messanger. I would use the restore function and go back to before the update posted and see if that works. If that doesn't work you might have to find what the update number is and then go into add and remove programs and uninstall it.
Someone with a little more knowledge will probably stop by and let us know if I am right. Give it a little time.
This is microsoft we are talking about. They sent everyone a notice saying they would require all computers using MSN messenger to upgrade to the latest messenger as all the prior versions would not be allowed to sign on. It was for "security" sake and other reasons.
Trust me. We weren't the only ones who were using the older version because the newer ones were and apparently still are having issues. I was using 8.5, she was using 8.5 (my sister) another friend of mine was using 8.0 and another one 8.0. My sister was forced to update the day before the rest of us and the next day we all got the same message. As far as I know, this voice chat choppiness is effecting several netbooks and, but we can't figure out what's so special about these newer versions of MSN Live that makes it such a problem when all the others work. I mean we're not trying to watch HD content her or 3D gaming on a dell mini, it's supposed to just be voice chat.