Thread:Project:Support desk/Should I use CentralAuth or shared tables?/reply (8)

Yeah, but I try to avoid using $wgDBprefix with CentralAuth because my view is that CentralAuth is more likely to run into trouble when not on a WMF-style installation with no $wgDBprefix.

Yeah, I'd recommend CentralAuth - it's difficult, and make sure you do some small-scale testing first.