Does anyone have the same issue? I still have it after 800 miles!

 

Yes

I dont know what I am doing wrong but I've got it on almost every Porsche I've owned. I am trying to be very careful with the brakes - perhaps too careful?

 

I had the same issue on 08 GTS soon after I picked it up and it still continues...if you do a search you should find numerous threads discussing it.

What works best for me is to slam on the brakes while and come to a hard stop, that usually takes care of it for a couple of weeks.