Both Fedora 12 and Rawhide contain rubygem-rubyforge 1.0.5. Version 2.0.3 is available now at http://gemcutter.org/gems/rubyforge New version of rubygem-rubyforge is needed to package rubygem-jeweler (#553898), and another two packages that depend on it. Please consider updating the Fedora package to the newest upstream version.
*** This bug has been marked as a duplicate of bug 565549 ***