why was there dump just after open today, page-7

No. It wasn't that as I know who did most of the 12.5 buying.

Not everyone sits at the computer trying to play games with the traders. Some people just want take a position and not worry about the half cents.

Although the first reaction of others to a big sale is that the seller must know something but more than likely this is rarely the case.

Probably the only thing that the seller knows is that he/she needs to cash up quickly to pay a bill, invest eleswhere, or whatever.

The biggest gotchas is when someone thinks that a number in the queues or sale of of some shares has more meaning than just a number in the queue or a sale of some shares and then makes a decision just on this.

A lot of regrets are created this way.