questions method returns error 4000

Question

I'm getting error 4000 on every endpoint on questions method (with key):

http://api.superuser.com/1.0/questions?sort=votes&pagesize=30&page=1&key=stackprinterkey

the only endpoint not affected is stackoverflow:

http://api.stackoverflow.com/1.0/questions?sort=votes&pagesize=30&page=1&key=stackprinterkey

key parameter is the first suspect.

Answer 1

DNS got a little screwy there cutting off some of our back end. In particular, the back end that manages [app] keys.

Its been fixed now.