For OpenBSD in particular, there's a history of arguments between djb and Theo about the licensing for qmail and djbdns. They're both incredibly stubborn, and w

For OpenBSD in particular, there's a history of arguments between djb and Theo about the licensing for qmail and djbdns. They're both incredibly stubborn, and while this means they have very high standards, it also means they can be hard to collaborate with.