bmd
Island in the stream.
I have it on a cooling pad. The pad itself does nothing (literally, the USB cable's fucked) and neve really amd any difference, but at least the underside is exposed. I'm not seeing any fluff. Perhaps it just runs hot in the heat!
I would check the operating tolerances of your particular laptop. If it's outside them then you have a problem. Most probably fluff unless you haven't had it long.