david, thanks again for your report, and thanks for your persistence in answering all those questions.
It looks like the "apt-get update" has fixed this problem for you. However, it's probably also prevented us from seeing what was causing the problem in the first place. If you do (or anyone reading this does) experience the problem in future, please report a separate bug and attach these files: /var/log/dpkg.log /var/log/apthistory.log /var/log/syslog Thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/800992 Title: Ubuntu software center does not install programs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/800992/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs