Firefox 2.0.0.1 has just been released. If you’re running Firefox 2.0, you’ll see the update as it automatically installs. When you exit Firefox and restart it, the update will finish its installation and check for updates to any Add-ons (formerly called Extensions) that you have installed..
Primarily, v2.0.0.1 is a security-fix update, although it has changes for increased compatibility with Windows Vista. (Gee, I wonder why they were needed? At least it’s not the same old “Windows doesn’t run on DRDOS” bogus error messages.)
