Last tarball release on sourceforge was 2003-08-29. This is functional, but stable branch has changed a bit since then. A new tarball should be released in the next few days once some code is cleaned up.
To check out the stable release from anonymous CVS:
cvs -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/wikipedia login (hit enter) cvs -z3 -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/wikipedia co -r stable phase3
(Note that SourceForge's anonymous CVS server lags about a day behind the developers' CVS server.)
-- brion vibber (brion @ pobox.com)