Comment 105 for bug 432205

I do not know if it is safe, i just know it worked for me. Do you need i attach some of my new files to check something ?
Concerning https://help.ubuntu.com/community/ADSLPPPoE#Boot%20issues , I wish there had been some comments on the wiki to explain the effects of these manipulations. I suppose it desactivates the pppoeconf when NetworkManager is active ? Is it more reliable than removing /etc/network/interfaces ?