1. If you can see this file from the browser, avast should see it too:
    http://www.avast.com/iavs4x/servers.def

  2. You can send the report using program ashbug with switch /setuplog (ie. run from commandline ‘ashbug /setuplog’). Don’t forget to describe the problem in few words, or put there link to this thread.

You really have home network with a router? Quite unusual…