It may not be at 100%, but it's certainly not using only 1% of the CPU. I already told you, my computer does lag as a result of having it open. It's not as bad as other times that it's lagged, but it is noticeable.
I have a question though: Is the arrow cursor in the mp3 player application supposed to make smooth movements? It lags horribly for me, so it will jumpe from place to play if I simply move my mouse. It seems to only be refreshing the position about 3 times per second, and it looks odd. This isn't a major issue, but like with the other problem I have, it is noticeable.