In software center there is a button 'update now' which should update the catalog if installed without internet. and also there is another bug report reported by you bug 529692 with 'update now' not working
** Changed in: software-center (Ubuntu) Status: Incomplete => Fix Released -- software-center should display to launch "apt-get update" if the system is installed with not internet connection https://bugs.launchpad.net/bugs/500875 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