I run NetBSD, and I’m one of the loons that updates his copy of the sources every day and rebuilds the complete operating system. I tell myself that I’m performing an important QA task, but it’s just due to being neurotic. It’s also not guaranteed to build on any given day. A couple days back, I rebuilt the everything and my SpamAssassin broke. Since then, my spam wasn’t filtered out and came directly to my inbox. Wow, what a huge volume of crap! I forgot how much I depend on SpamAssassin. Fortunately, one of the developers fixed the problem a couple of hours ago.
For those who don’t have access to SpamAssassin, or Apple’s Panther/Jaguar mail, I’d suggest Postini. I use all three in different places and they all work well.