Is anybody running netbsd on any of those "server blade" systems,
or any other high density (greater than 1 computer per rack unit)
system?  If so, what do you like or dislike about the system you
have?

I have a number of 3+ year old sysems with CPUs ranging from a
a 300MHz P2 to a 500MHz Celerons.  None is computationally
challenged in the job it's doing, but I'd sure like to free up
some of that rack space.  (And yes, I have good reasons for not
doing the work on fewer machines.)

TIA,

---Alex