Comment 7 for bug 789859

I can reproduce this bug on Ubuntu 12.04. (and all supported previous Ubuntu versions).

I can add that this bug is NOT SYSTEMATIC, i mean on a given system if you use add-apt-repository then remove the ppa many times consecutively, sometimes the ppa is added correctly, sometimes not. But i can't manage to establish a rule saying why/when the bug appears.

IMHO, this bug is Importance=High , because it blocks the updates on the user's system.