AMEN to that.
I use Netscape 4.7x with Messenger almost exclusively. Because viruses are almost always transmitted by MS Outlook and Outlook Express, I have never received one (of course a good Anti-virus program updated weekly helps, too!!!). But you're right about Nutscope 6 -- it's a mess, and putting out the first version (before it was even really a Beta) was sheer stupidity on their part. The reviews I've read recently say that the most recent version is better, but still buggy. I'll wait a while longer to switch.