Premature upholstery wear?

[Nick-L]

Greetings all, I've been lurking here for a while, I bought a 2006 Boxster S this summer (guards red w/tan leather, 6 speed of course), have much enjoyed the car (despite only having driven it about 1400 mi in the past 5 months).

Today I saw something a little shocking - there are two spots of wear on the driver's seat where the leather is worn almost completely through, the dye is totally gone. I NEVER have anything sharp or protruding in my pockets. Have there been any reports of thin leather or premature seat wear in these cars? I'm astonished if this was caused by a button on a coat or jacket. I wear the same clothes when I drive this car as my other cars, and those rack up 70,000+ miles with no discernible seat wear. Is this a common complaint, or do I have a defective seat?

Thanks!