I upgraded our ppp/mail server to 1.3.3 and the system paniced after 2 days
of uptime (this system had uptimes of over 60 days before):

# dmesg -M netbsd.1.core -N netbsd.1 | more
...
vm_fault(0xf0846600, deadb000, 1, 0) -> 1
fatal page fault in supervisor mode
trap type 6 code 0 eip f0156f25 cs 8 eflags 10282 cr2 deadbf01 cpl 0
panic: trap
syncing disks... 7 7 done

dumping to dev 1, offset 458876
dump 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 
6 5 4 3 2 1 

Does this tell anything to you gurus or should I do something more to
trace the problem?

I'm also experiencing problems with the Cyclades serial port driver.
Under NetBSD 1.2 (with the "original" driver written by Timo Rossi),
I never got any overruns with common modems.  However, with 1.3.3
kernel (and the "options CY_HW_RTS" line in my kernel config", I keep
getting hundreds of overflow messages in my syslog.  Is anyone else
using the cy driver with better luck than I am?

(The password problem I whined about was my own mistake.. no problem
with NetBSD, actually.  Thanks to all who responded!)

  -jm