[Koha-devel] Koha uninstalled by Debian Linux "update"

Hello, Just a heads up that a recent “update” by Debian Linux removed the application Koha – my apache and data files apparently are fine. Does anyone know how to reinstall Koha without damaging the data files … If anyone has any experience with this, please let me know. If you see the red “burst” in the upper right hand corner, only do the safe install .. or else…