Is anyone else having/had a problem with the outlying border of their quarter windows getting lighter in color like the black is fading. Don't know the best way to describe it but it looks like soap scum behind where the glass is mounted. Not sure how it would have gotten there. I've had the stang for almost 2 years now and it just started appearing maybe 3 months ago.
Without seeing it, the problem sounds like it might be moisture between the seal (glue) and the glass. But it seems odd that both sides would be affected.
I've started noticing this problem on my '07 on both sides as well. Ford quality leaves something to be desired on these cars...