How much of a problem is security updating for open source software going to be in 2009?

On the first of the month — also the first of the year — Dana Blankenhorn published the sensationally titled The biggest threat to open source in 2009. His thesis is simple: that, because open source software usually lacks any mechanisms for easily updating to the latest security patched version, the growing popularity of open source software will render it more vulnerable to problems than its closed source counterparts.

As a long-time user of open source operating systems, previously favoring Debian GNU/Linux, and subsequently moving on to FreeBSD, I was stunned to see this in writing, published for all the world to see. Was he serious? Could he really believe that?

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