Empty dmesg output

[Nicholas Killewald]

Is there any situation in which dmesg should give no output whatsoever?
   Currently, my FreeBSD machine (RELEASE-6.0) isn't reporting anything
at all when I call up dmesg.  It has been on for quite some time, and to
the best of my knowledge there isn't much of interest it should have
reported recently.  It DID say something back at its initial bootup and
for some time thereafter, but nothing now.  Is this normal, or should I
be a bit concerned?
-- 
Nicholas Killewald