I've found that the problem was my switch. Unfortunatly it gets broken by chance while I upgrade my distribution, so I was thinking the main problem was that upgrade as with 8.04 it was working fine.
I've checked also network level before using ping, but I discard problems with this after just two or three packages, but I've found later that if I sent a bunch of ICMP packages, about 1/4 of them was lost. So I checked connections, wires and the switch (actually an ADSL router with four ethernet ports), and replacing it by an older hub I do not lost ICMP packages anymore and I was able to print the test page without problems.
Forget my previous comment or even delete it.
I've found that the problem was my switch. Unfortunatly it gets broken by chance while I upgrade my distribution, so I was thinking the main problem was that upgrade as with 8.04 it was working fine.
I've checked also network level before using ping, but I discard problems with this after just two or three packages, but I've found later that if I sent a bunch of ICMP packages, about 1/4 of them was lost. So I checked connections, wires and the switch (actually an ADSL router with four ethernet ports), and replacing it by an older hub I do not lost ICMP packages anymore and I was able to print the test page without problems.
Hope I didn't you lost too much time with this.