Vista must really have been a crock of **** for MS to release W7 so quickly.
Not really, they just hung around with XP too long.
The timeline is a bit like this:
Windows launched 1985
Windows 2 1987, 2 yrs
Windows 3 1990, 3 yrs
Windows NT (think of it as the beginning of 32 bit) 1993
Windows 95 1995, 5 yrs
Windows NT4 (NT with the 95 front end) 1996 (3 yrs from NT) (just retired an NT4 server, 12 yrs of service)
Windows 98 1998, 3 yrs
Windows 2000 2000, 4 yrs, internally Windows 5.0
Windows ME - 2000, 2 yrs
Windows XP - late 2001, 1 yr after ME and 2000 where NT and the 16 bit line merges and the end of 16 bit windows, version 5.1. NT type windows becomes the mainstream after 16 yrs of 16 bit
Windows XP 64 bit for Itanium- 2003
Windows 2003 (server only) - 2003
Windows XP 64 bit for x64 - 2005
Windows Vista 2006, 5 yrs from XP, same time difference as Windows 3 to Windows 98, launched in 32 and 64 bit simultaneously
Windows 2008 (server) 2008- also 5 yrs from server 2003 though there was a 2003R2 with Vista codebased stuff in it
Windows 7 - 2009, 3 yrs from Vista. Also Windows 2008R2 based on the 7 codebase, aligning desktop and server. 64 bit becomes mainstream after 8 yrs of 32 bit mainstream
So the shortest lived was Me, Vista lasted as long as 3and 95, longer than 98 and ME.
Vista is OK - but 7 is much more efficient. Got 7 on a netbook here, gonna replace the desktop PC soon with a 7 box as well.