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Anyone else experiencing the same problems?
This happened to me - I sent a support request and a couple of days later they seemed to have fixed it, however there are still signs of discontinuity amongst the various "Google Account" pages.
For example, if I login to the top level Google Accounts page, it still shows Google AdSense under "Try new services"; even though I can now login to AdSense using the same account, or at least I think it's the same account - i'm not really sure at the moment! AdWords isn't mentioned on the top level account page at all.
Confused? You will be.