[SQU] No DNS records

I routinely and randomly get the following message from our Squid Cache. It
affects randomly any site and there is never any issue with the DNS on the
system. You can always tell it is going to happen because of the delay in
retrieving the page.

Could someone recommend a course of action to isolate the cause. I have done
nslookups while this is happening on the chosen site on the server in
question and that is returning the ip for the site.

It just seems that the squid dns is not getting the info

The requested URL could not be retrieved

----------------------------------------------------------------------------

----
While trying to retrieve the URL: http://www.anonymizer.com/ 
The following error was encountered: 
Unable to determine IP address from host name for www.anonymizer.com 
The dnsserver returned: 
No DNS records 
This means that: 
 The cache was not able to resolve the hostname presented in the URL. 
 Check if the address is correct. 
Your cache administrator is sysadmin@egr.com.au. 
----------------------------------------------------------------------------
----
Generated Tue, 31 Oct 2000 22:58:01 GMT by proxy.egr.com.au
(Squid/2.3.STABLE4) 
TIA
Peter McLarty				Phone: 61 7 3277 7999
Network & System Administrator		Fax: 61 7 3277 9524
Progress DBA
EGR Pty Ltd
Salisbury QLD 4107			
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email: pmclarty@egr.com.au		Peg Member 200001301
World Wide Web: http://www.egr.com.au
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