@MarkOne - The difference between IE and FF

The difference is not that one is a bug-free program and the other isn't. ALL large programs have bugs.

The difference is that when bugs in Firefox are found, they get fixed quickly. When bugs in IE are reported to Microsoft, Microsoft has been known to sit on them doing nothing, until such time as either a security researcher publicises the bug, or evidence mounts that black hat hackers are actively expoliting it.

Also, Firefox is open-source, so lots of eyeballs have studied the code, meaning the obvious bugs were fixed long ago. Is that true of IE? Who knows, apart from an unknown number of MS employees and others who signed an NDA. Security by obscurity doesn't work.