You people act as though Firefox will be 100% secure and never have any of the problems IE has. The only guarantee you'll get from Firefox is that you'll have to keep patching and updating it every other week for the next 3 years while it establishes itself as a browser--it's version 0.8 for God's sake.
This country hasn't migrated away from Microsoft to open source nearly enough to bring an ounce of competition to IE. It will remain the standard for browsing for years to come and moving to an independant browser won't change that, it will only force you to compensate for your inadequacy.
<3