UPDATE: Just installed Firefox 9.0.1 on my main laptop and all is right with the world....
Mike is working on my other laptop, which was even worse with Firefox than my main one. Once he installs the new version, hopefully this will correct that computer.
Maybe with upgrades done to the website, my older version of Firefox just wasn't as compatible?
UPDATE More: Installed 9.0.1 on my other laptop and things are working normally for TOTV through Firefox.
Maybe those who are having the same problem I had might also need to upgrade to a different version. Hopefully, for them, it will solve the problem.
Merry Christmas!