From what I read, briefly, it's something to do with the name servers (NS), not something in google settings, but with your registrar/domain host, apparently the NSs aren't giving out the same names, I don't know if this is a red herring or not, but your symptons, beach balling, time outs, are typical of a network related problem, not getting a connection, might be that the domain avast proxy resolves is not the adequate one and thus it's forwarding the connection to the wrong server.