Hmmmm... So you're saying that the parking brake does not adjust the rear pads at all? Can anyone clarify this?
It just seems very odd that about a week after I started using the parking brake (engaging with foot off of the pedal) that I started getting this situation. It is definitely the pads making the noise on the rusty part of the rotor. I know this because the noise comes as I slow down while moving and I am getting all kinds of rusty powder on my wheels as it wears off.