Avast is blocking .edu and .gov sites but all esle is fine

After recommending Avast internet security to my friend the other day he purchased it. The anti virus itself seems to work fine however when he tries to go to any website that has .edu or .gov it says server not found. When I disable disable avast all of the .edu and .gov site load just fine.

Also this happens with Internet explorer, firefox and chrome.

Any examples of full urls visited, not just the .edu and .gov ?

Has your friend made any changes to the web shield site blocking or the avast internet security firewall settings ?
There should be no default blocking for top level domains.

Wat other security software is/was there on that system?
If it was removed, how was it removed?