Last couple of days I've seen:

Nov 25 06:00:40 zen /netbsd: swap_pager_clean: clean of page 3665000 failed
Nov 25 06:00:40 zen last message repeated 7 times
Nov 25 06:04:47 zen last message repeated 3 times
Nov 25 23:31:04 zen /netbsd: swap_pager_clean: clean of page 1c85000 failed
Nov 25 23:31:36 zen last message repeated 36 times
Nov 25 23:33:42 zen last message repeated 72 times
Nov 25 23:43:02 zen last message repeated 773 times

etc
uname -a
NetBSD zen.quick.com.au 1.3.2 NetBSD 1.3.2 (ZEN-PUC) #5: Fri Oct  8 23:46:14 EST 1999     root@zen.quick.com.au:/u3/NetBSD/1.3.2/src/sys/arch/i386/compile/ZEN-PUC i386

uptime
11:48PM  up 45 days, 13:29, 18 users, load averages: 2.11, 1.81, 1.27

record uptime for this machine is 150 days - had to shutdown to remove
tape drive :-(

top shows:

load averages:  1.93,  1.82,  1.33                                     23:49:58
128 processes: 2 running, 126 sleeping
CPU states: 35.3% user,  0.0% nice, 33.0% system,  0.0% interrupt, 31.7% idle
Memory: 34M Act 17M Inact 8724K Wired 320K Free 186M Swap 42M Swap free 

  PID USERNAME PRI NICE   SIZE   RES STATE   TIME   WCPU    CPU COMMAND

I assume I should be worried?

--sjg