Eh, I'd say it was the release of Windows 95, too.
I was one of the early users to get an early upgrade from Win 3.11 to 95 at work, mostly because I was quite animated about how terrible Win 3.11 was to work with... I was begging for a Mac, old SUN box, or anything else they had available. I was fortunate that I could sometimes use an older SGI Indigo (original) the engineering guys kept as a demo system, or else I think I'd have gone insane... I was due for an upgrade, and actually tried to requisition an SGI Indigo2 like the engineers were using, but my management wasn't real happy with someone who was basically an intern at the time asking for a big $$$ engineering workstation... Go figure. So Windows 95 was thrown at me, instead. And I was told I would use that.
Well, anyhow, after about a week of using 95, I started realizing Amiga was in SERIOUS trouble. Windows 95 was really the first Microsoft OS that really could be called a complete OS, and was good enough to use on a regular basis. Sure, it still had it's share of quirks and problems, but that was the turning point, where a Microsoft OS was "good enough" to get your work done with a minimum of hassle.
