When logged in, my profile shows "Unregistered". I can't vote or anything, I get the "Please login or register to vote for this post." message. When I log in (through Stack Exchange or google) everything looks alright, but I still get the "Please login or register to vote for this post.". Any way I try, I can't get it to work.

I have access to meta, however I can't post there ("Anonymous participation isn't allowed here; please log in before posting.").