In reference to the picture below, linked from this post...
http://www.martinloganowners.com/fo...tin-Logan-Aeon&p=120728&viewfull=1#post120728
I just took a detailed look at my 8 year old Aeon's, my panels don't have as dark of spots, but I have spots on the mylar where each and every hole in the stator panel is. I believe this to be normal, as my panels still sing beautifully. My Aeon's have spent their existence in my 73*F upstairs media room. They have weathered two hurricanes though, Rita and Ike, which is the only time they saw higher temperatures in my house.