I think we had some hosting/hardware problems about then, and that whatever was generating the snapshots did not get set up again. There have been many many many improvements since April 22.
In a project, I recommend obtaining jboss via an ant script that checks jboss out of cvs at a specified version and time, and keeping this ant script in version control. I also recommend compiling jboss in its "download directory" and copying the parts you need into a project build directory. Updating jboss can be a separate operation from building your project, yet you can easily move to a newer jboss version simply by changing the ant checkout/build script and rerunning it.