Many thanks to everyone for testing the preliminary release of HotPot v2.1. The detailed feedback was very helpful in polishing it up.
I have added HotPot v2.1 to the 'HEAD' branch of the central Moodle CVS repository. I think this means it will be included if you download Moodle 1.6 (but not 1.5.x)
Please continue experimenting and playing with the new module. If it does something strange (or if it does something well!) please post a message on the HotPot forum.
happy Moodling, happy HotPotting 
Gordon
P.S. You can have a look at the new module in action on my server, here:
http://bateson.kanazawa-gu.ac.jp/moodle/16/ms/course/view.php?id=3
If you would like to see the reports or upload your own quizzes, you are welcome to log in as a teacher using the following information:
username: guestteacher
password: hotpotv21