An anonymous reader writes: Despite support for Windows XP finally ending three months ago, the ancient OS has only now fallen below the 25 percent market share mark. To add to the bad news for Microsoft, after only nine full months of availability, its latest operating system version, Windows 8.1, has lost share for the first time.
For desktop browser share, Chrome is up, taking mostly from Internet Explorer and Firefox
. For mobile browsers, Safari continues to fall while Chrome maintains strong growth.