How to tell driveshaft problem or gearbox..

[pridzz]

Got a bearing sort of rubbing noise which sounds like its coming from the n/s - Its like a wherring noise which is at the speed of the wheels, Its there throughout all the gears and even if you depress the clutch pedal.

Changed all the mounts inc alloy bracket and wheel bearing inc hub carrier...Seems worse since changing wheel bearing mind and having it all apart..Could it be driveshaft as had it hanging whilst changing the bearing?

Next is check gearbox oil and obv change driveshaft..