I have a Windows XP Pro SP2, with IE7 that decided to stop opening un-secured web sites. Was working til today, then stopped.
Secure web sites are not a problem, neither is pinging any website. But when you try to access a standard webpage (www.google.com
etc) only get Page cannot be displayed.
Seems to have started to spread to at least 2 computers now, but all scans with AVG8.0, and various spyware programs all come back clean.