Wow, Kao that really sucks. If you do hunt him down look for the cell phone/phone book/pc etc. Best to have the numbers of friends and family as leverage later
Though, it doesn't help in this case it does look like Google will be coming out with it's own paypal-esque service. So far they've proven that they care much more about the customer and their money, personal information, and conveniences so I expect this to be a very successful product and hopefully it will force paypal to iron out it's problems and give all of us something better.
Without real competition the economy as no real reason to improve so either way it's a good thing