Several months ago I opened a bank account at the new Washington Mutual branch that opened around the corner. I like their service, except that their (old) website did not work with Firefox. I had to fire up Safari to do my banking.
Today I noticed a new look to their site, so I figured they may have fixed up the Javascript or whatever else may have annoyed Firefox. I tried it in Firefox and so far everything looks like it works.
This reminds me that I wish banks would publish a browser compatibility chart along with their new account disclosures.


must be a mac thing
i use wamu also; and, i've never had a problem with firefox