The belts I know of in the car are the timing belt and
the accessory belt (which seems to service everything with
just one long belt) Is there another one hidden somewhere?
(its a pretty tight compartment) I checked the accessory
belt and seems alright except for this brown dust on it
but that is not concerning me much. This morning there
was no trace of that sound but I fear that it will return.
Because it is gone again, does that meen its less of a
problem than if i heard it all the time?

Thanks

Also - It happened while driving and in park.