I wonder if that's Firefox with any add-ons installed or just a vanilla installation. Out of the box, IE8 is more secure than all of them (and I'll admit that without a review), but with the addons installed (Ad-block, No-Script, etc), I think Firefox will give IE a run for it's money.

And that's one thing which gives firefox a heads-up over IE8. The ease in creating, customizing, and installing addons for the browser. IMHO.

Have a great day
Patrick.

This is typed in Firefox only because that's what opened the first time I checked the forums. Typically, I surf in IE8.