Tasks using over 100% of CPU?

There are a few Root tasks that occasionally use more than 100% of my CPU according to my Activity Monitor. One of them was at 148% at one point.
There is usually just one Root task that uses that much CPU whenever I open my Macbook from sleep or it just happens at random times. And the only way to stop it is to force quit the task that is making it do that. It all started after I was ripping a DVD using iSkySoft and it froze so I had to force quit. Once it quit, the CPU problem came up.
Why does it do this? Do I just have to check the Activity Monitor every now and then to delete the Root tasks that use a lot of CPU? Is there a way to permanently make it stop?

Well the root task problem stopped but now I just turned on the computer and Finder was using about 80% CPU for some reason but it seems to be working now after I quit it in Activity Monitor and brought it back up again.

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