dentangle, 
The other day I had a bug in my code that only affected NetBSD.
In the interests of balance, today I'm trying to track down a bug that affects Linux, FreeBSD and OpenBSD, but not NetBSD.
Seriously, I've run this test 6654 times and counting, and NetBSD is still happy. I guess I'll call that a pass?
Now Linux, FreeBSD and OpenBSD - explain yourselves. Why can't you behave like NetBSD here?