Question: I think utorrent has been consuming lots of bandwidth and my connection is not that fast.
How do I set it so that it consumes the less possible bandwidth?
I've tried setting its download and upload limit to 1kbps. Together with the download bandwidth allocation set to low. I even exited utorrent but it seems that it is still consuming lots of bandwidth. How do I solve this one?

Answer: 
Don't forget that closing uTorrent via the [x] at the top right doesn't actually exit the program. It closes the UI but keeps the process running - there should be an icon in the system tray.

To completely close uTorrent you have to select **File > Exit**.
Devices like home routers usually have problems when it comes to high number of simultaneous connections. Having many open connections is way more of a problem than bandwidth. Limit the number of open connection to 80 from your .torrent client.
It should be enough to up/down and not overkill anything in the process.

When you don'y use it, exit it (by right click and exit), as said by ChrisF.