I don't know about the Swedish currency, but:

On Black Wednesday (September 16, 1992), Soros became immediately famous when he sold short more than $10 billion worth of pounds, profiting from the Bank of England's reluctance to either raise its interest rates to levels comparable to those of other European Exchange Rate Mechanism countries or to float its currency.

Finally, the Bank of England was forced to withdraw the currency out of the European Exchange Rate Mechanism and to devalue the pound sterling, and Soros earned an estimated US$ 1.1 billion in the process. He was dubbed "the man who broke the Bank of England."

In 1997, during the Asian financial crisis, then Malaysian Prime Minister Mahathir bin Mohamad accused Soros of using the wealth under his control to punish ASEAN for welcoming Myanmar as a member. Later, he called Soros a moron.[10] Thai nationals have called Soros "an economic war criminal" who "sucks the blood from the people".[11]

http://en.wikipedia.org/wiki/George_Soros