There was a large batch of lesser-confirmed reports several weeks back (later refuted by some), but this new one seems like it's worth trusting:

As China's first anti-monopoly law went into effect on August 1, 2008, Microsoft (MSFT) has been targeted by Chinese IT companies for suspected monopolistic activities and may become the first defendant in a Chinese anti-monopoly lawsuit.

Interesting times ahead. According to one man's calculations, Microsoft has lost more than $110,000,000,000 in market cap over the past year. To quote in full: "Microsoft has now lost over 110 billion in market cap. This is based on current outstanding shares and price decline over the year. This doesn't take into account Microsoft's stock buy-back, including purchase of shares owned by Bill Gates and Steve Ballmer, which were purchased to keep the sales from flooding the market and crashing the stock price." ⬆