Can anyone tell me what this means?

lox /netbsd: vflushbuf: dirty: type VBLK, usecount 15, writecount 0, refcount 10,
lox /netbsd:     tag VT_UFS, ino 5888, on dev 0, 0

lox-[~] mcr 1001 %uname -a
NetBSD lox.sandelman.ottawa.on.ca 1.4 NetBSD 1.4 (LOX) #2: Sat Jun 12 20:00:16 EDT 1999     mcr@istari.sandelman.ottawa.on.ca:/j/netbsd/obj/LOX i386

Alas, the machine's record in the past two days is not as good as before:

reboot    ~                         Thu Oct 28 02:35 
reboot    ~                         Wed Oct 27 22:08 
reboot    ~                         Mon Jun 14 23:04 (kernel upgrade)
reboot    ~                         Mon Jun 14 22:48 (inserted new modem)
reboot    ~                         Tue Feb 23 21:19 
reboot    ~                         Thu Feb 18 07:58 
reboot    ~                         Tue Jan 12 10:37 (kernel upgrade)
reboot    ~                         Tue Dec  8 18:43 

   :!mcr!:            |  Cow#1: Are you worried about getting Mad Cow Disease?
   Michael Richardson |  Cow#2: No. I'm a duck.
 Home: mcr@sandelman.ottawa.on.ca. PGP key available.