Lian, the package of the proposed repository is OK. You can to make "pinning" — https://help.ubuntu.com/community/PinningHowto:
1) sudo touch /etc/apt/preferences.d/lucid-proposed-100 2) sudo chmod 755 /etc/apt/preferences.d/lucid-proposed-100 3) Edit the file with this content: Package: * Pin: release a=precise-proposed Pin-Priority: 100 4) Mark the "proposed" repository See this old picture: https://help.ubuntu.com/community/Repositories/Ubuntu#Updates_Tab Read if prefer: https://wiki.ubuntu.com/Testing/EnableProposed 5) sudo apt-get update 6) Simulate: sudo apt-get upgrade -s 7) None? Then the "pinning" is OK. 8) sudo apt-get install lsb/precise-proposed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094218 Title: lsb_release crashed with IOError in getstatusoutput(): [Errno 10] No child processes (called by teamviewerd) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lsb/+bug/1094218/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs