It could be caused by how the FP wiring is routed. Open the case and try to keep it away from everything, especially fans & neon/flourescent lights
hm your right, there are alot of lights and fans in my case (4 fans and 6 lights). but theres not much i can do about them the plugs as far away from them al pssible :P guess i'll have to use the rear panel audio jacks. are there any programs that can turn the lights off in ones computer?