by wurst » 07.09.13
oki, back, it was an internal dns error.
background:
the /etc/resolv.conf containded a dns server that was only reachable through VPN (my old flat where internet was canceled on 29-06...)
funny that it didnt fail the 3 years before.
i think the wrong IP was set by dhcp during server installation @ home.
im using dns names in local networks too, due to less administrative work on IP changes.
anyways, stupid, corrected.