Dear Programmer, Very nice and useful the Nagios plug-in named check_apt : but I have big problem with it: not comfortable to my network, because I nowhere find the possilility of treshold settings. Exactly how many updated means 'warning', and how many means 'critical'. I need warn at 19, and critical at 29 upgrade have. Is it possible in any way? In the program there is no warning and critical parameters for the _number of pieces_, only the 'name' for critical. Is there any reason to set the plugin for critical/warning pieces? If it will be source code I would try - but in this case I cannot. Yours truly Árpád Somogyi