Just in time for the Holiday Season I released a new version [1] of my greylist daemon [2]—it's the “Miscellaneous and Arbitrary Code Changes For the Christmas Holiday Season [3]” version, although the code changes aren't quite that arbitrary. In fact, it's just a bunch of very small, somewhat arbitrary changes that don't really all fit into a single theme, unlike the previous versions.
So, if you are using it, you might want to check over the changes and see if you think it's time to upgrade.
[1] http://www.x-grey.com/download.html