Restarting server and memory leaks

[Albator]

So even with 0 players it seems I have to restart my server at very least every couple days. If I don't and try to log in it is disconnected after charecter creation probably just due to timeout from the server. Is it common practice to have automated nightly restarts? What is the source of our server code, is it built from some open source server code originally? Has anyone attempted to find the memory leaks? With a playerbase like PEQ or P99 what does the restart schedule have to look like?

Any help would be appreciated.