Just picked up my new 07 S3 and am over the moon! One strange thing though, about 20 seconds after I switch the motor off, the computer starts grunting and chattering. It goes on for about 5-10 seconds and sounds like a cross between a dial up modem trying to connect and someone putting a screwdriver across a set of battery terminals. Definately not a healthy sound! I had an 06 demonstrator for a couple of days, which didn`t make this noise. Any similar experience with the 07?