A click on the Facebook-Connect Button give me an "Error 500". When I uninstall JoomSEF everything works fine.
When I use the "Basic Rewrite"-Feature the Facebook-Connect works but all the Menulinks are totally crazy and are forwarding to total wrong pages.

I hope for an quick answer. If not I have to uninstall and try another SEF-Component.

Cheers,
SupNub