Dont you just hate when you run out of the office/house/building without quitting your server? I know I do. When i first started development this would be a daily occurrence. Here is a quick tip on getting rid of those hidden servers that are running on your machine. (this is the ruby version, I am sure this will work with most programing languages).
OH NO! No worries here is what you can do to fix this problem.
hit command+spacebar to open up spotlight
type: activity monitor
You should see this screen.
In the finder bar of activity monitor
type: Ruby ( or the programing language that your using)
Click quit process
Force quit and your done! See that was not so hard...
Cheers and happy coding,