Computerworld's forecasts have been overly optimistic about XP's decline. In mid-2011, Computerworld predicted that Windows XP would account for 38% in the third quarter of 2012, three percentage points lower than the eventual number.
Current estimates based on Net Applications' data indicate that come April 2014, Windows XP will be running between 27% and 29% of the world's computers.
"The end of XP support is a potential time bomb," Camwood said last week. "And the clock is ticking."
Windows XP users who want to create a countdown clock on their desktops can install one of several free utilities -- including TimeLeft from Canadian developer NesterSoft -- then set the countdown target at 10 a.m. PT on April 8, 2014. (Microsoft shoots for a 10 a.m. PT release for each month's security updates.)
Gregg Keizer covers Microsoft, security issues, Apple, Web browsers and general technology breaking news for Computerworld. Follow Gregg on Twitter at @gkeizer, on Google+ or subscribe to Gregg's RSS feed. His email address is firstname.lastname@example.org.
Read more about windows in Computerworld's Windows Topic Center.