You are possibly right, tck, but IMO it happens in most stocks....

You are possibly right, tck, but IMO it happens in most
stocks.
It sounds to me like you thought the Aust. Post deal was
"in the bag"...I don't know whether you got that impression
from the company itself or from the "cheer squad" on
this forum.
The sensible thing is to have a stop loss in place and
sell if it gets hit. The fact that you say the SP dropped
60% (from 50 to 20) and you still hold it tells me you
haven't thought about a level at which you will cut your
losses. And now it's down another 35% from 20 to 13.

This is a stock that has gone from over $6 to 13 cents!
Use stop losses, don't bother relying on ASIC to protect
you, it won't happen!