general instability while using limewire

[girard]

when i am playing songs with the limewire system opened up, my computer just does all sorts of jumping around, pauses, delayed typing in messages or emails, sluggishness, leftover images, just generally i can tell it's interfering with every thing. I used to listen to music on limewire years ago and didnt notice this problem. when i turn limewire off, the problem stops.
Now I don,t mean i'm dowloading songs at the time, i am just playing music with the lime player. any suggestions?? thanks girard