That's odd. Are you sure you're using the same password as stored in firefox? Differrent capitalization or something?
PM me your new e-mail address, and I should be able to make the change for you.
If you don't get the password thing sorted out, I can also reset it to a temporary password and e-mail it to you, so you can get into the control panel and change it to whatever you want. Or, Jody or Joseph can probably extract your password and e-mail it to you, but if your old user e-mail is no longer valid, we'll have to change it first.