This is a story without a happy ending. For months I, like many others, had been bombarded with fawning reports about the latest edition of Microsoft’s operating system, Windows 7. Admittedly, I was skeptical. Then I tried out a new laptop running the OS, and I was sold. I took to the software’s new features like a vampire to blood. Viewing thumbnails of open documents from the task bar was great. Pinning items to it for swift access was terrific, too. This is so good, I thought, I should install it on my own desktop.