Ten years later, Windows XP still dominates the Web

And in the Apple market, Lion is still trailing two-year-old Snow Leopard

In its final monthly report for 2011, NetApplications offers a window on the shifting fates of the various flavors of Microsoft (MSFT) Windows and Mac OS X that show up at its 40,000 clients' websites.

As a rule, creaky old legacy systems dominate.

Windows XP, which Microsoft introduced in August 2001, is still the single most-present PC operating system, with a MORE