New statistics released earlier this week show that Mac OS X's market share has grown by 29.4% and Windows has gone down by 3.8%.

Quantcast, a web statistics company, has found that Mac OS X represents about 10.9% of all Web usage and Windows represents about 86.8% of all Web usage.

The report did say that since the launch of Windows 7, Windows has been steady, but declined a little, since Apple sold 3.36 million Macs this past holiday season.

Mac OS X grew 7% between December and January and Windows grew 0.9% in the same timeframe.

Quantcast also posted a Mac OS X version share, revealing that Mac OS X Leopard is the most popular OS X version to date. Leopard represents 52.1% of all Mac users. However, Snow Leopard represents about 27.3% of all Mac users, and adoption of Apple's newest OS is rapid. 17.2% of all Mac users are running Tiger and 3.4% were on an earlier version of that.

On the Microsoft side, Windows XP represents 51.8%, Windows Vista with 37.4 and Windows 7 represents 10.2% of all Windows users.