[squid-users] The requested URL could not be retrieved

Dear All

I have change the config file of my cache box and I start get this error
during the traffic time, when the limit start cross 10meg real:
even when I disable the timeout limit (#dead_peer_timeout 60 seconds) but
error still appear:

The requested URL could not be retrieved

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While trying to retrieve the URL:
http://sports.yahoo.com/tennis/blog/busted_racquet/post/Serena-returns-to-th
e-tennis-court-wearing-skint? 
The following error was encountered: 
Unable to determine IP address from host name for sports.yahoo.com 
The dnsserver returned: 
Temporary network problem, please retry later 
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 support_at_sat-link.us. 
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Generated Wed, 13 Apr 2011 20:19:36 GMT by Bilal_at_Sat-Link.Us
(squid/2.7.STABLE9)