"Microsoft gained nearly five percent market share in the Web server market, however still lags well behind market leader Apache, research and security firm Netcraft said Friday. Nonetheless, it was the biggest one-month swing in the history of the industry. With more than 80 million Web sites on the Internet, Microsoft now claims a 25.2 percent share, up 4.7 percent from March. Apache still leads by a wide margin, however it was down close to 6 percent to 62.7 percent. Sun remained a distant third, down slightly to 2.36 percent."