Secunia Reports on IE and FireFox...
I was just browsing through some security bulletins today and found some interesting facts from Secunia, a Security Advisory firm. According to secunia, the following are the security issue stacks for IE and FireFox..
The "Month by Month" graph below shows the number of issued Secunia advisories affecting Microsoft Internet Explorer 6.x on a month-by-month basis.

The "Month by Month" graph below shows the number of issued Secunia advisories affecting Mozilla Firefox 1.x on a month-by-month basis.

I think, very soon FireFox will become a FireFix Browser ;-)