what's happening to the wprld economy?

world economy, markets, everything is falling apart since lehman brothers bankrupted
stock prices in the world is going down like crazy all at once in the world as most of u guys may know. at the same time, exchange rate is falling apart too...
but exchange rate for our country is a bit different somehow. yen rate is getting stronger and stronger... it was 100 yen to RM3 when i left penang. now it's 100 yen to RM3.8... it's quite a big difference... what is more shocking is aussie dollar is so much cheaper now...
it was about 89yen to AU$1 when i paid deposit for uni... rate for yen-aud rate today is 56yen to 1aud... it'd have been waaaaay cheaper for us to pay for fee today... what a loss right? but it isnt good thing at all if yen is continue to be this strong. it is only good for people working outside japan who is earning in yen... expensive yen means everyone wants to sell the stock and nobody wants to buy japanese stock ergo stock price goes down and economy is going bad...

anyway my point is, what gonna happen to the world???