Problems with Impulse/Stardock logins? Just my account?

When I got home from work today, I went to download the Elemental beta.  It wasn't in the list of games Impulse knew about, so I clicked "check for updates", and Impulse said that I didn't have a Stardock account: "A Stardock.net account does not exist for (MY EMAIL).  You must register the account first."

I tried checking impulsedriven.net via a Web browser.  All my game registrations are still there, including an Elemental registration (but I can only download it through Impulse ).  I can view Stardock forums as a logged-in user from computers where I still have a login cookie.  But when I tried logging out on one computer and logging back in, my user name and password failed to work -- the same ones I've been using since I created this account.

Is this a general Impulse/Stardock database problem, or do I need to email [email protected] about my account?