I'll take a closer look tonight. The algorithm for determining what's a password field (and what's not) completely changed in 0.8.2. I was quite hesitant to do this since the existing algorithm was mature and well-tested (close to a year's use and no complaints). But I saw how the BugMeNot extension was detecting password fields and it looked attractive.
I should have left it alone :(
Sorry for the inconvenience. I will change the algorithm back to the old one ASAP.
-Eric