Same here, I do 15 miles each way, most of it motorway so I've never had a problem with the DPF. I got documentation with the car telling me that it should have a decent 20 minute run each day to keep it ticketiboo as it were.
Each day! I never heard that. What car is it?
My last two cars have been diesels but what with this DPF nonsense, the price of diesel and the improvements in petrol car consumption I will not be getting another one.