Thanks for the heads up edgunner.
Sudden surges in buying activity can occur as a result of a favourable brokers recommendation or tip sheet.
Back in the boom days one tip sheet in OZ could cause massive surges with email and sms buy recommedations.
Other reasons of course could be a fund taking a position, or a good old fashioned leak.
After 1.30, hmmm brokers coming back from the pub?
Oscar