At the same time Business Secretary Peter Mandelson has moved to toughen up anti-piracy legislation to include the ability to remove persistent file-sharers from the net.
Look for a line in the file containing mscdex.exe and delete everything up to it, so that the line begins with mscdex.exe. (You can remove all subsequent lines from the file, too.) Save the file.
If you do get in a predicament like this, where it continues to be very awkward or uncomfortable, you have two options: remove yourself from the situation, or file a complaint.
By analyzing the distance between points on the CAPTCHA's distorted pitch chart and the pitch charts of possible answers to the puzzle, his program was able to remove the noise and "listen" to the file just as accurately as a human.