Incompatible Unison update

[Stephen Warren]

The unison package in Fedora 8 was recently updated to an incompatible
version, which breaks (previously working) interoperability of F8 with
other systems that have the older Unison version.

See the details at:

https://bugzilla.redhat.com/show_bug.cgi?id=433742

I assume I'm correct in saying this was the wrong thing to do. What is
other people's take on this?