Replies

"They'll create a fix for it since Firefox's code is open source"

They still haven't, open source or not.

"Any way, its one bug compared to the thousands documented in Internet Explorer"

IE has been attacked by malignant code writers over a thousand times more than Firefox has, because IE is by far the overwhelming market share leader.
Of course more vulnerabilities will be found in IE.

I can write a browser at home that no one knows about and claim its got a 100% security record too, because no one has attacked it.

Its like saying the Swedish army is tough because they haven't been defeated in battle for the past 40 years.
Of course they haven't been defeated in battle, BECAUSE THEY NEVER FOUGHT ANY BATTLES FOR 40 YEARS!!

" Microsoft hasn't even pledged to make its browser more secure"

Microsoft has, starting from Bill Gates down, over and over again, and they are working hard at it.