10.04 -> 10.10 upgrade networking problem

[claudiomet]

Greetings.

After upgrade Ubuntu Server 10.10 from Ubuntu Server 10.04, Ubuntu
can't resolve hostnames.
The only solution for the moment is type "sudo /etc/init.d networking
restart" after login.
The /etc/network/interfaces resolv.conf files are fine and resolvconf
package are installed.
What can be the problem ?

-- 
Claudio Cortes
+56 (2) 2994121

Meteorologo
Laboratorio de Meteorologia y Pronostico de la Calidad del Aire (LMPCA)
Unidad de Modelacion y Gestion de la Calidad del Aire (UMGCA)
Centro Nacional del Medio Ambiente (CENMA)

--
Claudio Cortes
+56 (2) 2994121

Meteorologist
Meteorology and Air Quality Forecast Labs
Modeling and Air Quality Management Unit
National Enviroment Centre, Chile (CENMA)