I originally set dolphin up on a dedicated server, then tried it on a shared server. I moved it back to a dedicated server. Among other things, the manager / administrator of the shared server will impose technology and restrictions that will make it impossible for you to benefit from dolphins extraordinary capabilities. While you might get away with it for a short time, you will end up paying a big price in time and configuration mishaps by using a shared server. As Sammie will often write, if you need to use a shared server, don't use dolphin.
What probably happened to you MichaelSwiss is that you reached a point in scale that your shared server complained. OR, the systems administrator decided to change something. OR...someone else on your server started running a program that ate up the resource allocation for the server and killed your processes.
Arthur