Firefox 1.0.1 released

The Mozilla Foundation have released Firefox 1.0.1.

As reported by CNet in Mozilla releases Firefox security update, this is especially to fix:

a vulnerability in the Internationalized Domain Names (IDN), a standard for handling special character sets in domain names that could let an attacker spoof Web sites on non-Microsoft browsers. The standard allows companies to register domain names that appear to be the same in different languages.

However, as indicated in the Mozillazine commentary, Mozilla Firefox 1.0.1 Released, users cannot simply upgrade to Firefox 1.0.1, but must uninstall any earlier versions of Firefox on their machine first before installing the new verion.