another rumour is that some hedge funds short BEA's shares beforehand and deliberately spread bad news thru sms messages to local people so that they can benefit from BEA's price fall
btw, there's still long queues outside the Bank's branches
beware: there's premarket opening session before 9:45 am hkt in the morning session and before 2:30 pm hkt in the afternoon session
check with www.hkex.com.hk for details