I canít see that the firewall would be a problem. I am also behind a firewall and Opera 6.0 has never had any problems. Even if you are behind a firewall and try Netscape or IE the problem never happens. It is something with Opera only and is not version specific. It either works or it freezes. If it works you can turn off cookies or change any other setting and it still works.
I just canít narrow the problem down to anything that is common.
Thanks for the help though.