Necroing my own post with additional info...
Had my computer stolen along with > $12000 worth of electronics.
Just got the settlement back from the insurance co and rebuilt my computer, so I'm logging back into everything and DLing all my AddOns and...
I just realized even while logged in that once again I have Ads.
So here's what I did:
I logged in with my username first and saw OMG Ads!
I logged out and back in a couple times. Closed the browser, reopened.
Still ads.
I verified my account still showed Premium.
Finally, I tried logging out, then logging in WITH MY original Allakhazam e-mail address.
No Ads.
Ta da!
Not sure what's up with that, but I'm glad I figured something out, and I hope this helps somebody else.
-T.