You need to contact Symantec about their plans to update their products to work with Firefox 4. They have indicated that Norton 360 will not be updated until early May, but I do not know about other Norton products.

Thanks TonyE, contacting Norton is a great idea. I am sure they are getting a lot of inquires about this problem. Firefox 4.0 is amazing but not if you can't use your Logins.

Norton pulls this crap with every new version of Firefox for the last few years now. And it's not like Mozilla develops Firefox in a vacuum, and then springs the new version on an "unsuspecting security vendor world". Plus, Norton doesn't seem to be content with just updating their Firefox extensions all by themselves for existing customers. Norton makes a big deal of it all by coming up with a new version of the entire security program, that they then charge their users for - even users who are still under contract with Norton.

I honestly don't know why anyone would actually pay for Norton, when there are so many better security applications out there that don't cost a dime - for personal use.