It looks like ur client has been infected with some new virus like Welchia.
It generates random packet out to port 80 and easy to make squid hang :>
like http://aaa/ http://aab/ or etc ...

-----Original Message-----
From: Henrik Nordstrom []
Sent: Sunday, April 18, 2004 09:22 AM
To: Anthony Ogburn
Subject: Re: [squid-users] Squid stops responding after a number of requests

On Fri, 16 Apr 2004, Anthony Ogburn wrote:

> The problem is that after running squid for a period of time, it stops
> responding. Squid is still running and accepting connections, which
> are logged to access.log, but it never answers back. A restart of
> squid will clear the problem, but after a number of restarts, the
> entire system must be rebooted to correct the problem. It appears the
> problem is tied to the DNS. Running "squidclient mgr:idns" shows an
> increasing number of DNS queries, but no responses.

Use tcpdump to inspect what the DNS traffic looks like. Also verify this on
the DNS server (assuming you have a local DNS server).

From your description it sounds like there is a firewall problem blocking
DNS access after a while. Restarting Squid may help to such problems as a
new UDP port is then allocated for DNS queries.