I think I've mentioned it on here before, but I wouldn't put that out of the question, Suss.
There could be a deformity in the strut tower that unevenly loads the bearing, but that's just me grasping at straws at the moment. The fact that I've had the same corner give me the same problem twice now, leads me to believe there is something inherently wrong with that area of the car, and not just the bearing.
I just know that it isn't the strut or strut mount.
Joined the dark side.