After making a change as suggested by Google yesterday (amalgamating my Gmail, Adsense, and Adwords accounts) it seems I can no longer access my Adsense account (login seems to be in an endless loop).
It sounds like others experiencing a similar effect (I have seen a number of posts in forums). I have tried to contact Google support -- no response yet. I am hoping this is a temporary technical problem, not a huge screw up with my account.
Anybody out there seeing this as well?