Rubber Window Sealer Coming off!!! You?
 

I have a 2000 S2k. I don't know the proper term for it, but the rubber sealant around the windshield is starting to come unglued bit by bit. I'm referring to the rubber ???"gasket"??? that keeps a seal between the edge of the windshield glass and the car body.

Has anyone else had this problem?
How do I fix it?
Will it be covered underwarranty if I'm still uner 3years and 30K miles?

your help is appreciated.