Bill Thompson is trumpeting the glory of open source software and bug fixing.
But the bugs in Firefox worry me a lot less than those in IE, just as the patches I have to apply to my Apache web server are less of a concern than the monthly collection of Windows Updates on my main desktop machine.

This is not because I do not like or use Microsoft software. It is because Apache, Firefox, and many of the other tools I use every day, are open source programs.

I can, if I feel like it, look at the original program code and the fixed program code and understand for myself what was wrong and how it has been fixed.
A fair point, but how many of us are actually capable of this? How many of us would want to bugfix for ourselves? At the end of the day we must still rely on others to fix bugs for us. Luckily, the Mozilla Project are fairly speedy at rolling out updates.

[BBC News]