OT: Firewall running OpenBSD, why?

I became very curious after I read a couple of posts assuming OpenBSD as the best OS for a firewall box. Could anyone explain (or at least point out links) why OpenBSD would be more appropriate for a firewall? I am planning the instalation of a firewall, and I was thinking about a linux box, possibly running the LRP package. I do not intend to raise any OS-war, but rather to understand the arguments for each side. Cheers, -- *** Rodrigo Martins de Matos Ventura <yoda(a)isr.ist.utl.pt> *** Web page: http://www.isr.ist.utl.pt/~yoda *** Teaching Assistant and PhD Student at ISR: *** Instituto de Sistemas e Robotica, Polo de Lisboa *** Instituto Superior Tecnico, Lisboa, PORTUGAL *** PGP fingerprint = 0119 AD13 9EEE 264A 3F10 31D3 89B3 C6C4 60C6 4585