FreeBSD vs. OpenBSD
What is FreeBSD?
FreeBSD is an advanced BSD UNIX with support for a whopping 2 architectures spread across by a Tiger Team of 1982763450 individuals with a talent for using /dev/random.
Cutting edge Security Holes
FreeBSD offers 76 security holes including the crucial TCP holes, and a full line of bloated, unnecessary binaries which can leave your system on the Attrition mirror in no time.
I saw this on the FreeBSD-Hackers list, with reference to this site.