yes, it's the same for me ... I feel less alone now !
I've tried various kernels (2.4.18, 2.4.20, 2.4.21) and it's always the same thing. I can select a static IP in my network or request it with DHCP, it works. But when I want to use other services (HTTP, ssh, FTP...), it doesn't work. As I said in the last post, I've also tried changing my linux debian to a linux redhat with no results.
Maybe a BIOS option to (de)activate ?