while checking my sites stats I found all of them "not verified" linking to this notice:
http://www.google.com/support/webmasters/bin/answer.py?answer=35231&hl=en

sounds like the new features like crawl rate have attracted too many new users and google fails to scale again...

FWIW, mine are all reporting fine. Maybe they're not due for re-verification just yet though...

strange... not all of them are due to re-verification... AND the login process took me 2 min... so it's more probable to be a general problem...