The RPM spec file says that the samba package obsoletes samba-common, samba-client, and samba-swat. This is incorrect and is left over from the all-in-one Samba RPM; it means that upgrading to the latest Samba RPM removes samba-client and samba-swat.
This was a cut-n-paste error. I've already fixed this in
some pending patches and will be building new Fedora RPMS
on Monday. Thanks for reporting it though.