Forum OpenACS Q&A: Response to Might be a AOLserver problem
The reason for AOLserver not listening the eth0 was indeed that it couldn't find the ip from server's configuration [ns_info address]. In fact I had given it the address already once, but then I just tested it with 'lynx localhost', and voilá, AOLserver didn't answer (because it seems not to listen localhost when an ip is explicitly given) so I gave up then and didn't remember to test it with real address.
But now everything seems to be in order and I have a working sceleton and can start thinking about applications.
Thanks again to everyone and cheers,
P.S. USA just beat Mexico 2-0 in the World Cup and went to the quarterfinals against Germany so some of you can go on with your not-too-heated debates about the soccer hegemony