JA:
How much, if any, do you keep up with Linux development?

Matt Dillon:
I read linux-kernel passively and occassionally converse with various
Linux people, including Linus, on issues that effect both OS's (such as
SMP locking issues and VM). In Linux's early days I did a considerable
amount of work on the TCP stack, and also wrote a cron replacement
('dcron'), but my love has always been with BSD, due in part to having
gone to UC Berkeley, so most of my focus these days is on improving
FreeBSD's reliability.

Gruss