Windows XP was a good OS but had significant security problems. 7/10
Windows Vista,for a variety of reasons, was a piece of crap. 4/10
Windows 7 (I have the Home Premium Edition, 64 bit) is a very good OS, stable and, for the most part, secure. 8.5/10
You are aware aren’t you that the Windows 7 developers re-introduced security flaws that had been locked down in XP?
Article was posted and discussed here a couple months back...
=8-)