Hi Till, I'm using Jailkit version 2.10 without problems on my ISPConfig 18.104.22.168 servers. (At that time i installed Jailkit before i installed ISPConfig). Now, i wonder if it is safe to upgrade to the latest Jailkit 2.11 version. I want to know this, because i know Jailkit must be installed first and then ISPConfig. If not, does that mean an upgrade to the latest Jalkit version is not possible? Thanks for your answer.