Not running in my background. Even if it was it shouldn't be anything to worry about. Android keeps recently used services in the background so if you go back to the service it is quicker for you. You apparently do not understand how android handles data management and are likely used to windows. FAQ: Why You Shouldn’t Be Using a Task Killer with Android
this should help out some, feel free to google if task killers are needed for android if you want more sources.