Torrent Dowloading is over Speed Trigger is still on. Is this normal?

I Have successfully completed downloading a required torrent (using utorrent) and stopped it once it was over as I have a limited data allowance. After a couple of hrs.. I return back to see the speed trigger is still showing the upload and download graph steadily moving. I have currently re connected my internet connection and re installed utorrent this has brought down the speed trigger considerably down. Should I be worried?