We've got 5 mailbox servers.
It's looking like when a person tries to schedule another user in a calendar event, if that other individual isn't on the same mailbox server the free/busy information doesn't display.
Users on the same server....from our tests they seem to be able to see free/busy times for each other.
Is this a known bug? I searched through bugzilla and didn't find it. In fact I thought this was an old bug that I'd seen a long time ago and that had already been fixed....but maybe not.