Alex finally received the postcard I sent when i was in Cambodia, almost two months later. Not only were these the most expensive postcards I've ever sent while on holiday ( 1 USD for a stamp, even though the value was only 0.5 USD - bloody ripoff), they're also the slowest ones to arrive.
My guess is that they've sent a postman on a bike from Phnom Penh to Hong Kong to deliver it :)
*** UPDATE 15/12/08: my mum let me know that my card to them has arrived too. It was stamped 27/11/08 - means they kept it lying around in Cambodia for a month and a half :)