I'm noticing that I'll be logged in as one user but when I comment on my own blog, it records me as my other WP.com identity. Very annoying. And the blue admin bar I can see while viewing raincoaster isn't the raincoaster admin bar at all but the wordguru one. I can get to my dashboard via the /wp-admin link, but not via the admin bar. Very annoying. I reported it in an email to support.
Is anyone else experiencing this?