Lauren Weinstein writes: I had originally been considering accepting Microsoft's offer of a free upgrade from Windows 7 to Windows 10. After all, reports have suggested that it's a much more usable system than Windows 8/8.1 — but of course in keeping with the 'every other MS release of Windows is a dog' history, that's a pretty low bar. However, it appears that MS has significantly botched their deployment of Windows 10. I suppose we shouldn't be surprised, even though hope springs eternal. Since there are so many issues involved, and MS is very aggressively pushing this upgrade, I'm going to run through key points here quickly, and reference other sites' pages that can give you more information right now. But here's my executive summary: You may want to think twice, or three times, or many more times, about whether or not you wish to accept the Windows 10 free upgrade on your existing Windows 7 or 8/8.1 system. Now that we're into the first week of widespread availability for the new version, if you're a Windows user and upgrader, has your experience been good, horrible, or someplace between?