Windows 3.1-1992 Windows 95-1995 Windows 98-1998 Windows ME-2000 Windows XP-2001 Windows Vista-2007 Windows 7-2010 if you take out ME, the releases are every 3 years apart from the gap between XP and Vista which was 6 years. puh-lease, don't just guess at things to make a point.
Packard Bell makes very good PC's, it's a France based company I believe and I've used their systems. I had one back in 2005 called iXtreme or something and it was hardcore! So don't worry, you've got a solid PC there mate. :->
Eh, they're all just made in some back-alley fabrication plant. At least you'll feel safe in knowing if you drop it off your desk, it will break.