http://nvd.nist.gov/nvd.cfm?cvename=CVE-2007-3165 "Tor before 0.1.2.14 can construct circuits in which an entry guard is in the same family as the exit node, which might compromise the anonymity of traffic sources and destinations by exposing traffic to inappropriate remote observers."
It is already built: http://koji.fedoraproject.org/koji/buildinfo?buildID=7651 But I cannot find it in bodhi.
tor-0.1.2.16-1.fc7 has been pushed to the Fedora 7 stable repository. If problems still persist, please make note of it in this bug report.