Airodump keeps running and running

Hello, i've got a issue with the airodump command. When i use the command it starts as usual, but it won't stop running. I went away for a while and just let it run in hope that it would be done when i come back, but.. Currently i got: Elapsed: 4 hours 39 mins.. Can someone tell me what's the reason of this and how i can solve it?

airodump is used for packet capturing, so it will not stop until you press ctrl+c. i recommand that you take some time to read about the aircrack-ng suite and wireless hacking in general to be able to understand what you're doing...