Just got a vista machine. Have been using avast on xp for many years. Installed avast on vista and IE will not do anything. Tried updating avast and it fails to connect. Went and made sure that the windows firewall is off and all the same thing. Went into command line and pinged google and it worked. Turned off avast and IE works. Nortons was pre-installed on the machine and uninstalled it using Revo. Any ideas or help?