Windows deservedly gets a lot of bad press about the unending stream of security updates. But Linux, despite all of the propaganda about it being more secure than Windows, has its own security problems.
Take this post from LWN.net yesterday:
[Posted October 25, 2006 by corbet]
It is sad that this is worthy of note, but it is: on this day, Wednesday, October 25, we have not received a single security update for any Linux distribution.
(This post was composed on a laptop running Kubuntu 6.06.)