Hi, I tried to upgrade from 2.2.21 to 2.2.23 on CENTOS 4.4 Error occurs: "The PHP binary coming with ISPConfig does not work properly on your system! The installation routine stops here!" (It seems I have a virtual memory problem). OK. Then I tried to rerun .setup, see current ISPconfig instalation is not being reconized anymore (new instalation is running). So I stoped the process to avoid lost of data. I had a look in tmp directory with ls -la /tmp. It seems there is no backup available. Only one file have been created today, its name is sess_6a5sd6f54a6sdf(what ever)a56a4sdf654as , owner is adminispconfig, and size is 25 bytes (no KB). I have 3 question: 1. What shall I do ? 2. If there is a bakup of my ISPconfig installation, where is it, and which command(s) shall I run to restore it ? 3. Maybe I can make a copy of my mysql database (the one related with ISPconfig) then install newly the 2.2.19 version of ISPconfig and then replace the mysql database... I remember Falko explained how to do this but I cannot find it anymore. Thanks for any help.