[Brian]

To clarify things a bit - bonjour is different than the other sync methods. Since both apps have to be running, and because you're on a local network, one copy of OmniFocus will actually notify the other copies right when a change is made. That's likely what the 'how are you avoiding regular syncs' question earlier was about.

I'm not aware of any additional benefit that pressing the sync button offers if you're doing Bonjour sync, but other folks that know more may jump in to correct me.

If folks are seeing the sync spinner go endlessly, please contact the support ninjas so we can look into this.