Squealing Sound When Slowing Down
 

Despite almost rhyming this problem is only mildly obnoxious but I
wanted to see if it was indicative of something serious, or maybe just
brakes on their way out. Whenever I'm slowing down and get below a
certain speed, say 15mph, there is a squealing noise coming from
somewhere in the neighborhood of my front end. The squeal happens
whether I'm braking or not, but if I am braking and it happens and I
take my foot off the brake, the squeal continues. If I stomp on the
pedal to slow very fast, the sound dies out relatively quickly. If I
don't get above 15mph and slow down, the squeal never happens. Is this
just that worn brake early warning piece of metal that I've read about
(but haven't had a car with it before now)? I was under the impression
that that only made noise when you WEREN'T braking, although this
happens whether I am or not. Or could this potentially be some
bearing slowly going bad?

Any and all thoughts welcome,
Bill