Firefox 3.0 RC1 compatible version available! Rated 5 out of 5 stars

PwdHash 1.5 is compatible with FF 3.0 RC1 and is available on the Standford website! It is in the review queue for addons.mozilla.com but you can download it directly in the meantime.

http://crypto.stanford.edu/PwdHash/#download

This review is for a previous version of the add-on (1.5).