Re: Is the top window problem on '05's only?
I have a theory regarding the window seperation. (Based on nothing concrete of course!) With the Top up and the windows down the rear window vibrates rapidly. In Sunny climates where the top is up for protection but the windows are down for airflow. the Heat and Vibration "MAY" lead to weakening of the bonding agent.
Just a thought. Merry Christmas and a Prosperous and happy NewYear.