Honestly, if you look at the vBulletin.com forums, facebook connect will be obsolete soon, and will be replaced with Open Graph or whatever its called. Facebook is planning on merging their Connect button with a bunch of other websites like Google/Yahoo/Myspace,OpenID, so that logging into sites really becomes alot easier for everyone.
So all these facebook connect problems will be a thing of the past give or take a few months-year at most...
In that time, you may lose all your members that joined through facebook connect, due to database config...who knows how it will be set up.
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