A few months ago I noticed a faint worn bearing noise and when I changed my brake pads I also serviced both front wheel bearings.
The right front had obviously had some water in it as the bearing races and cages were rusty.
The rust was only superficial and the races were marked but not really pitted.
I regreased the bearings and replaced them and resolved to order a new front bearing set from Autohausaz.com and the noise has continued for the last couple of months with no real change...