Hi folks,

I was just doing a little looking into why a web site I'm working on was 
a bit sluggish coming up and Firebug
informed me that the bulk of the time is getting tied up in DNS 
resolution. It looks like each resolution is
taking either 1 or 2 seconds, even for localhost! Since the web page has 
three tiers of files referring to other files,
that leads to a web site that loads in half a second if accessed through 
its IP (127.0.0.1) but is taking over
seven seconds if referred to by name (localhost).

I'd have thought localhost would resolve on my local hosts table without 
even bothering to ask anybody else.
Does it go out to the external servers before looking closer to home?  
(Seems backwards.)  Even if it did that,
I'd expect some kind of local name caching behavior to kick in. How 
should I troubleshoot this?

All of my DNS resolution is through Comcast. I have no DNS inside the 
firewall. My network is the usual
family workgroup, with Windows, Linux, Mac wired together and the flock 
of enigmatic gadgets on wi-fi
that has now become a standard affair. For the one or two machines we 
all talk to I use static hosts table
entries.

I've had other problems where DNS drops out entirely for minutes at a 
time but the network otherwise
appears to be fine - pings to IPs, etc. work. Since it affects all the 
machines here, I figured it was either my
router or Comcast DNS. Now I don't know what to think. What would be 
useful, though, is to know
how to troubleshoot that as well.

Many thanks,
Ralph

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