We're back to Microsoft as security pariah? I mean, it certainly was during Windows 95, 98, ME and 2000, holy cow, as a Linux user I got so much Nimda, Code Re

We're back to Microsoft as security pariah? I mean, it certainly was during Windows 95, 98, ME and 2000, holy cow, as a Linux user I got so much Nimda, Code Red and other traffic. But didn't we go through a period of "actually, Microsoft is good now"? What happened?