Ever since AdSense moved to Google Accounts, I get this message:

<<Welcome! You're signed in to Google Accounts under the email mymailgmail.com and your Google Account password, but this is different from your AdSense account email and/or password. If you're an AdSense publisher, try signing in using your AdSense email and password.>>

The message is wrong: they're actually the same. In fact, every time I log out from Google, I'm logged out from AdSense as well (and vice-versa). And another thing: the only options to log in is with a Google Account.

On the other hand, according to this page (https://www.google.com/adsense/support/bin/answer.py?answer=12745&topic=8430) I don't use Google Accounts to log in to AdSense.

It does the same thing for me... But my friend doesn't have that problem. If he's logged in to Gmail or something, he can go to https://www.google.com/adsense and be directly logged in, but if I'm logged in to Gmail and go to AdSense, it gives me that message and makes me enter my login info again....