I'm trying to reinstall phpMyAdmin for ISPConfig 18.104.22.168, since it does not appear in "Tools". I've had no success using "System -> Software Packages", trying to download a phpMyAdmin package (*.deb) listed in http://packages.ubuntu.com . I get an error ("Ajax Request was not successful") for Packages when I enable http://mirrors.kernel.org/ubuntu in Repositories. Please, how does "System -> Software Packages" work? Thank you very much.