solution given, wasn't a "bug" as such but a wrong setting of /etc/apt/sources.list
** Changed in: ubuntu Status: New => Invalid -- problème "update-manager" https://bugs.launchpad.net/bugs/310688 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs