I’ve used Roboform, I used to have some notes in EXchange for all my passwords (bad I know), but these are always getting blown away as I reinstall time and time again. My eight year list of passwords and account vanished on one unfortunate sync of Exchange (note to self, it is possible to lose *all* your notes in Exchange, which I didn’t count on).
So what to do? Well, I use Foxmarks for my bookmarks and at least these go into the clould. I’m now using Blackberry Password Keeper which reportedly does the same thing. With in Firefox, I’m trying “Sxipper”:https://addons.mozilla.org/en-US/firefox/addon/4865 which does password remembering and form filling. It actually works decently well.