I don't think any one is blaming Firefox, but it's the commonality for those having issues. The only people having issues are using Firefox, and those same users have no issues on the same PC using IE. That's a fact, not an excuse.Firefox opens it A-OK please everyone stop using that excuse; it has been debunked time & time again.
I have used Firefox for over 2 years at both work and home. I swear by Firefox, and am not going to rip on it by any means. I just used the D* website at work yesterday with Firefox having no issues. Today it did not work, however IE did. It's certainly not a coincidence that so many people started having issues on the same day. While we can't "blame" Firefox itself, something must have changed with the site that did not "like" Firefox.
I'm having no issues at home via Firefox, so either I have a different version of a plugin at work, or something has changed to resolve the "issue". (and I'm talking on the D* side, not Firefox)