Patrick,
Before I forget, later today, we'll be making a Joomla 1.6 support area, so look there for this thread at some point if you need to add new problems and can't find this thread. Will be easier that way.
As for your issues:
- Incorrect version check - Yup. We botched that. 20 minutes after we uploaded the extensions, we updated the versions in our system, and then realized we forgot to update the component to check for the J1.6 versions. The next release will definitely have this fixed, but until then, they'll be incorrect. We'll definitely respond here when updates are available.
- I think that's actually a bug that would affect the 1.5/1.6 version. The module actually just shows the Facebook user's friends, regardless of whether they're 'connected' on your site.. Facebook just needs to tell us there's a user there, and we show their friends. I can see how this is confusing in your case (in a shared environment), and am logging it as an investigation point. We have intentions to overhaul the Invite module in the near future (1-2 months), so this will definitely be figured out then.
- Usermap link - Yup, valid bug. Need to update that link.
As for the default group, that's definitely coming. For this release, we really are shooting for feature parity with our 1.5 version. Once it's out in a final form, we'll be going crazy with all the goodies that 1.6 offers - groups, profiles, etc. Hopefully, it's not a deal-breaker now, and we can likely show you how to change (with a few lines of code) how to hard-set the group for new FB users manually.
For JomSocial, we fixed that stupid bug in the 1.5, but didn't migrate it to 1.6. We'll be having a merged development shortly, so we make a change in one place, and it should fix for both versions.. that's a goal of 3.3.0. Until then, if you want to fix manually, please edit /plugins/jfbcprofiles/jomsocial/jomsocial.php. On line 261, change the if to the below (remove the $isNew):
Hope this all helps. Nothing above seems 'critical' so far. We'll be finalizing the 3.3.0 release with the above fixes and are shooting for a final release later next week. Should a critical bug appear, timelines will of course change.
Really appreciate the feedback, and good luck!