Rich,
Sorry for getting back to this so late.
I'm not exactly sure what you mean. We're getting a 3.4.1 release out later this week for some minor issues that have cropped up (as usual), but nothing crazy. The only one related to the Tab and Canvas integration that we've recreated and are fixing is that if you go to the FB Page with a Reveal Page set and the user hasn't liked it.. then go to the Canvas site.. then go to the user's 'real' site outside of Facebook.. JFBConnect will redirect to the Facebook Tab Page URL.
Confusing, and uncommon, but will be fixed
If you can let us know how to setup the menu item issue you're mentioning, we'll gladly look into it as well. Doesn't sound critical, but we don't like bugs either.. and after 3.4.1, we want to be done with the 3.x series and get 4.0 later this month (finally!)
Thanks, and as always, we appreciate the feedback,
Alex