[pwaring]

It's not just large businesses. About 1/3 of our users use IE7, although thankfully there's hardly anyone still on IE6. About 1/2 are still on XP (NT 5.1). Some of these are small companies with <10 employees.

[seanp2k2]

Don't forget third-world countries that largely rely on XP. IIRC as of about a year ago, a double-digit percentage of asia was still on XP.

[takluyver]

A double digit percentage overall is still on XP: http://en.wikipedia.org/wiki/Usage_share_of_operating_system...