Torrents Downlaod Speed : utorrent behaves abnormally

As everyone used to download stuff from net using some or the other downloaders, same as me. Today I was downloading a movie, I use utorrent to download movies and other torrent stuffs. I opted a plan for 175kbps, that means I can download anything at max at a speed not more than 20kBps. But today I saw some kind of abnormal behaviour from utorrent, it was downloading at an speed of around 230kBps. Is this possible to get such a speed when you opted such a plan. As per the speed of my blog I don't even thought of getting such a speed, I also noticed the same thing many times before too. But before it was around 80kBps, and today it was so high that I am able to download a movie of more around 700MB within fractions. Just check this you will believe this.If this is possible then there might be some settings for this so that one can able to download much faster than his plan speed. I use the default settings only except the enable scheduler thing, rest all the things are set to default.

I feel that there might be some bug, that is very helpful for us, I don't aware of this thing at this time, but if I came to know about this I'll let you know. Hope I came to know about this soon so that I can make use to download speed for full.