Some more fixes:

• Sleep(100) on waiting for an external plugin to finish -- BAAH, Sleep(0) hogged the CPU
• never (try to) write back the .ini file -- well you might not have permission and I(!) am the one who writes the config
• PortNumber -- specify which port to bind to, well 4949 what else? but was a simple copy paste
• LogConnections -- ability to turn off that insane connect logging every 5 mins
• MasterAddress setting -- limit the IP address of the remote (master) server connecting. Right now to only 1 IP, but how many munin masters will you have?

Still need to adjust external plugins to be able to use existing munin-node plugins.
Goal would be to install (active)perl and run the existing munin plugin that's usually written in perl. Who wants to reimplement that again with e.g. python?

patch binary