May 23 2012 the estimate was a loss of 3.75m for six months to...

May 23 2012 the estimate was a loss of 3.75m for six months to June 2012. Now in less than 2 months the estimate is revised down to a loss of 7.3m for the same period. Where do they find this extra 3.55m loss in less than two months? I do not understand from a managerial point of view WHY the previous forecast can be so inaccurate.

By the way, if China continues to slow and the sluggish performance extends into 2013FY, does that imply the company is going to lose half of its current market value in a year?

I feel the future clouded and after receiving the latest figure I am re-evaluating this company's intrinsic value.