H.S. wrote:
Do you have the machine's LAN card in DHCP configuration or does it have a static address?Is the machine connected to a router or to a modem?I had noticed a similar problem at my parents home, running Ubuntu and Firefox, and IIRC giving the Ubuntu machine a fixed address seemed to have solved the problem.->HS
In hindsight, it might have been the explicit nameservers that were mentioned in the static configuration that did the trick. Not sure though.