Cpu Usage?

Just recently i noticed that Kazaa lite K ++ program started to seem very 'juttery' and basically not working too well. I then noticed in my windows task manager that it is using between 60-90% of my CPU usage
If i remember right, it was not using anywhere near this amout before, and seemed to be running OK
Can anyone tell me what could be causing this??? i am doing nothing different with kazaa now to what i was doing before apart from i moved my shared folder to anyonther drive partition, but this problem started some time after doing this.
Thanks a lot
skylark