internet not working

[Cesar Augusto Suarez]

hi a few minutes ago, i`ve installed the final version  of kubuntu 7.04.  the problem is that i can not connect to internet, i have a DSL modem and its connected by ethernet to the pc, i try with the live cd too, but i cant connect any more.
This kind of situation is new, before, in the previous vesions (including 7.04 Beta) i used just  installed the linux and the internet were already up.

Whats the problem with 7.04?

i have winXP too, configured by auitomatic by DHCP, and its working OK.




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