Client has an HP laptop, Vista Home Prem.- came w/Norton. Norton expired, so they uninstalled Norton- all traces appear to be gone. Nod32 AV (av only- not Smart Security) installs normally, but once installed, IE cannot browse any web pages. Network connections are all OK- can ping internal addresses, as well as resolve and ping external web addresses. But no web browsing. If you disable HTTP checking, all works OK again. Installed both ver 3 & 4- same results. Uninstall, and all works normally again. Any thoughts on this? There are no spyware apps installed, no other firewall ap[ps, proxies, etc. I am truly stumped here.