Hi, I already have version 5.x of mysql on my Linux server. For some reason, an old school client wants to use v4. So I have installed v4.x for him. When compiling mysql 4.x, I specified it to listen on port 3307, also specified a different path for Datadir & socket. It was installed successfully. However if I'll start the v4.x, it will try to bind on port 3306 (default port which is used by v5), thus it always fail. Anything that I could have missed? Btw, there's no my.cnf generated for the v4. So I just copied the template on its directory, the port there is 3307 but still mysql tries to bind on port 3306.