Php Version: 4.4.7
Web Server: Apache 2.0
Operating System: Linux 2.6.18-53.1.4.el5PAE #1
SQL Server: MySQL 5.0.54-log
PhpWebSite Version: 1.5.1
The system has a problem with the italian translation. If you are running italian as your language, in USERS ADMINISTRATION you can't delete or make deity any user (but if I choose english it works again).