A bug-fixed version of oggcast~ (now version 0.2i) is available from http://www.akustische-kunst.org/puredata/pdogg/ It seems to work with latest CVS release of Icecast2 server (tested on Win and Linux) and with JRoar sever.
For all (part time) Max'ers on this list, oggcast~ and oggamp~ are now also available for Max/MSP (Windows version only, right now) as a test release. Get them at http://www.akustische-kunst.org/maxmsp/
happy streaming, Olaf