The FMS team just released an updater to the 2.x server. The update fixes a few bugs, many relating to on2 streams.
You can get the update here:
http://www.adobe.com/support/flashmediaserver/downloads_updaters.html
Here are the release notes:
http://www.adobe.com/support/documentation/en/flashmediaserver/204/releasenotes.html
A big thanks for the FMS developers and their hard work.
