Inernet error?

hi when ever i browse any site i get this message

The requested URL could not be retrieved

While trying to retrieve the URL: http://www.7laa.com/

The following error was encountered:

Unable to determine IP address from host name for www.7laa.com

The dnsserver returned:

Server Failure: The name server was unable to process this query.

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 webmaster.

Generated Sat, 27 May 2006 23:28:11 GMT by netjanus.magdi.it (squid/2.5.STABLE1)

i tried with different sites but still the problem remains with the respective site name i cannot open any site yahoo search engine or even system update

i reboot my system 5 time

i scan my system with norton antivirus but my system is clean

my default page file is set as 384-768 i tried with increase the page file

how to clear the chache

so now tell me whts the solution

Inernet error?panda

If you are still getting that error with other sites than the problem may lie in the browser itself. What you need to do is do a system restore back to an earlier date when the site was working fine. If you are running Windows XP this can be accomplished by going to your start menu, go to accessories, system tools, then system restore. Click on Restore my computer to an earlier date and click on a date prior to this error's occurence. See if that resolves the problem.