The suggest fix worked: sudo apt-get clean sudo apt-get update
** Changed in: software-center (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/748729 Title: package libx11-dev (not installed) failed to install/upgrade: corrupted filesystem tarfile - corrupted package archive -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs