three unison versions in bugzilla and strange update

[John Poelstra <poelstra redhat com>]

Does anyone know why there are three versions for 'unison' in bugzilla?
-unison
-unison213
-unison227

This seems very inconsistent with most of the other components there. 
Can we just go back to one?

Also... I have unison-2.13.16-3.fc6.i386 installed and when I 'yum 
update' it wants to install both of these:
---> Package unison227.x86_64 0:2.27.57-8.fc9 set to be updated
---> Package unison213.x86_64 0:2.13.16-10.fc9 set to be updated

Bug or feature?

John