As noted before, the CVS repository will close in favour of Subversion.
Today, a migration has happened from UseBB 1 in CVS to a branch in SVN. Also, all the release tags have been copied to the tags directory. Checking out UseBB 1.0 can now happen through the command:
More information is at http://sourceforge.net/apps/trac/usebb/#LegacyUseBB1information and http://sourceforge.net/apps/trac/usebb/wiki/SourceCode for general information and UseBB 2 specifics.
The CVS repository now remains unchanged and will be closed in the future.
Thank you for your understanding.