Maybe you don't do what they do?Crazy, my Leopard systems at work and at home haven't ever done anything you have said. As a matter of fact, I keep Safari running all week crash free. And the fact that you use Leopard despite all the problems and calling it Windows 98-ish makes you an unintelligent user. If it doesn't work, switch.
I've had SMB problems as well under Leopard. Safari 4.02 at least doesn't just disappear anymore and at least throws the crash reporter up now.