This bug was reported automaticaly in connection with IPv6 project.
Our aim is to support IPv6 in all Fedora Core packages so FC6 and RHEL5 will be ready for IPv6.
This package seems to lack IPv6 support as is illustrated in attached log.
Here follows part of scanning log (grep -r F_INET *)/up to 30 lines:
/gnome-user-share-0.10/user_share.c:78: sock = socket (PF_INET, SOCK_STREAM, 0);
It only shares the data over the local network using mDNS, so this isn't a problem.