[SQU] Host not found (authoritative)

I’ve been using squid, version Squid/2.2.STABLE3 on SUSE Linux 6.2
without problems for 6 months or so . It's running as a transparent
cache . Last week we began to get the following error messages from
sites we previously were able to reach:
 
While trying to retrieve the URL: http://www.computerworld.dk/
The following error was encountered:
Unable to determine IP address from host name for www.computerworld.dk
The dnsserver returned:
DNS Domain 'www.computerworld.dk' is invalid: Host not found
(authoritative).
This means that:
 The cache was not able to resolve the hostname presented in the URL.
 Check if the address is correct.
 
Any ideas ?
 
Best regards,
 
Peter
 

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