Well after many years of faithful service, I'm finally retiring my BP6 (2x C366 @ 505). It took the better part of 2 days to back-up and migrate everything to a dual P3 Xeon/1Ghz box (hey, gotta stay with duallies!). But wait... it's not fully retired yet. I plan on turning it into a part-time Linux development system, though with my spare time, it means it'll be "off" most of the time.
As a high-value, low-budget workhorse, my BP6 was awesome. It had its share of problems for sure but once working, it's been rock solid. Old motherboards never truly go away