If I install a package manager such as Macports, Fink or Homebrew, how does it affect the startup and running of my system?
It seems like the answer should be "Not at all when you're not using them" but I'm worried that they will break other software (like Mono) or run background processes. Is my fear totally misplaced? Are they just programs like any others?
They sure seem to put their footprint around the OS in quite a few places.