One thing that article doesn't mention is if, and how fast those vulnerabilities were fixed by Mozilla. The latest one was fixed and a patch released within 48 hours of receiving notification of that vulnerability. And when it comes to IE, how many of its' vulnerabilities have been there for an extended period of time without being fixed (IOW, not fixed for years). Another thing not mentioned is version numbers. Are they counting Firefox three times when the same vulnerability affects three different versions of Firefox? Firefox is one of the few programs put there that provides support for 3 different versions during any given month, they don't drop an older version as soon as its' "replacement" is released. Plus, pre-release development versions are available for for anyone who wants to use and test those pre-release versions. That makes for security fixes in three different major versions within days of each other, if not all on the same day.

Thanks. That lends a valuable perspective to this whole discussion. I thought someone from Mozilla should be aware of this evaluation and might wish to respond. As for me, I'm sticking with Firefox.