I wouldn't say the lube totally cured it, but it helped a great deal. I recently had the brakes done (pads, rotors, both axles) and when I got it back the low speed squeaking started - so I suspected they had not lubed the slides or pad surfaces well enough or at all. I went back on this trip and had a can of purple ceramic permatex ready to use on the steering wheel. They did (I can see it) and I am convinced it helped a bunch.
Now, I get a very slight squeak for just a second or two when slowing starting out - disappears at speeds above 5-10 mph.