w problems

[Terry Warner <keerf@netlabs.net>]

I have 4 machines running debian, 3 of them all have the same domain name (nuthouse.org)
now one of them is the main www.nuthouse.org, and the other 2 are just hosts.

On the nuthouse server when I ssh in from one of the other hosts, only the IP shows up in a w, yet it resolves fine in a nslookup. Then if I ssh into nuthouse from another box, the domain name of that box comes up fine. In case I am not making sense here:

ÀÄ(~)> w
  1:08pm  up 10:40,  2 users,  load average: 0.00, 0.00, 0.00
  USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU  WHAT
  keerf    tty1     -                02:28am 44:36   0.15s  0.11s  -su 
  keerf    pts/0    64.24.68.246     01:07pm  0.00s  0.04s  0.01s  w -u 

Ä(~)> nslookup 64.24.68.246
Server:  www.netlabs.net
Address:  216.116.128.3

Name:    straightjacket.nuthouse.org
Address:  64.24.68.246


now thats all from the nuthouse server. I'm not running named, or bind or anything on it because my DNS is hosted through the ISP I work for. Could anyone offer some help or suggestions of what I might have done wrong or how I can fix it? 

Thanks for your time

Terry