Wheel bearing noise

OK, don't laugh. I had a similar problem with my 69 Barracuda a few years ago. It was making a squealing/grumbling noise that I could not track down. I could not tell exactly where it was coming from, but I "thought" it was front wheel bearings. I tried packing them, and the noise continued. Then I replaced all of the front bearings and races, but the noise persisted. Then on a whim, I tried lubing the U-joints on both ends of the drive shaft. Magic; the noise went away. I guess I "talked" myself into thinking that it was wheel bearing noise. So my point is that unless you are positive that it is wheel bearing or axle bearing noise, it couldn't hurt to at least think about the U-joints. Noise from U-joints can travel and make diagnosis difficult. Btw, Rusty and PoisonDart I TOTALLY agree with your advice to do things in pairs.