Couple of issues:

1) Too many MySQL processes. Since SlimServer is effectively single threaded, it doesn't make sense to run multiple MySQL processes, since there can be only one query at a time.

2) Cleanup MySQL processes after slimserver crash - this does happen, and there doesn't appear to be a ny provision for this on a restart.

You might want to consider using a light-weight monitor process to start both MySQL and the slimserver. If either crashes, the monitor process can then do the cleanup, and either exit, or restart gracefully.