oops, nevermind - had set jiveURL but it was lost on a db drop/restore
it's back, and my jiveURL is still set correctly. only for links that you create using the link-finding wizard.
If you didn't restart after setting the jiveURL, it's very possible that the rendered body of the document / discussion / blog post you created was cached with the server:port instead of the new jiveURL setting. Does the bug still exist after a restart?