I have Lubuntu 13.04 (which already comes with Xfce). I can connect to internet only by PPTP VPN. I made a VPN configuration according to the instructions from the provider's website ...
This might sound strange but, working with my Lubuntu 10.04 i've experienced troubles when connecting to my eth0 newtwork. After some googling, i've found out that by writting in the CLI the following ...