We run a very basic squid setup on a windows 2003 box here. It's purely used to route all web traffic over a cheap adsl line leaving the leased line free for important stuff. The 'squid server' (win2k3) has the gateway IP set to that of the adsl router meaning that when someone sets the proxy in their browser all the web traffic will go over the adsl line. If for some reason the adsl goes down, we just change the gateway address to the leased line router and the web comes back. It's a basic but workable solution. However. We have been having a lot of problems with people getting DNS lookup failures when using the squid proxy. If we remove the proxy setting, the web works for the users, put them on to squid again and with an hour or so DNS failures appear. Hitting F5 a few times solves it and they carry on until the next time, but it only happens with Squid. I've tried swapping from the ADSL to the SDSL but it still happens if squid is used. I've tried another Windows proxy, and the problem doesn't happen, nor does it happen without Squid involved at all. Any ideas why this might be? I know that squid doesn't have a DNS element as such, using the DNS settings and servers specified on the underlying OS, but the fact that it only happens with Squid involved does make me think something is wrong somewhere. Olly
