http://ubuntuguide.net – My friend Jason use ADSL and his Ubuntu9.10 machine can not connect to internet with the default network-manager come with Ubuntu 9.10.Everytime the machine startup,he need to type pppoeconf command and configure to access to internet.Here is how to fix this problem in Ubuntu 9.10. Step1:Update Network Manager to the latest version from PPA (HowTos)