My July 2009 Sport 12,500mls cracked (not impact related) under warranty but I was advised by my Agent (reliable) to claim on insurance.
Although I wasn't overwhelmed with the reply it was a solution as I thought, this occurred end of May and the agents are still awaiting delivery of the new screen which is pretty abysmal really. I have dealt with this agent for 8 years through +8 ownership and have found them most reliable.
One can only hope the factory or windscreen suppliers endeavour to extract the digit before May 2012 !!!
