Windows 32bit Family XP RTM - 5.1.2600
XP SP1a - 1106
XP SP2 - 2180
Server 2003 RTM - 5.2.3790
Server 2003 SP1 - 1830
Server 2003 SP2 - 3959
Vista RTM - 6000.16386
Server 2008 Beta 3 - 6001.16510
Windows 64bit Family XP 64bit RTM - 5.2.3790.1830
XP 64bit SP2 - 3959
Server 2003 64bit RTM - 5.2.3790.1830
Server 2003 64bit SP2 - 3959
Vista 64bit RTM - 6000.16386
Server 2008 64bit Beta 3 - 6001.16510
When Microsoft stopped selling new licenses to Windows XP on June 30, it gave users and PC makers a "downgrade" loophole so that those who wanted XP could still get it, even though they still had to buy a Vista license.
According to data from the exo.performance.network, 35 percent of Vista-equipped PCs have been downgraded to Windows XP. "That's way out of proportion for even the dramatically unpopular Windows Vista," says
Randall C. Kennedy, an InfoWorld contributing editor, whose company Devil Mountain Software developed the Windows Sentinel
tool and analyzes the exo.performance.network data. (More than 3,000 PCs are monitored worldwide using the tool, in both the
free InfoWorld Windows Sentinel version and in the more extensive version provided to Devil Mountain clients.)