Yes, really. To quote Esther Schindler, "Microsoft's biggest and most dangerous contribution to the software industry may be the degree to which it has lowered user expectations." You claim that people are using Windows (and OS X, which as I've said I haven't used, so can't comment on) without problems. But realistically, if you look around an average office, you see people having problems all the time, and just accepting it as normal behaviour. And a perfect example of that is applications that hang and you can't even iconify them because the application is responsible for window management. You can claim that's not a problem until the cows come home. But it happens, and it happens sufficiently frequently that I'm happy calling it a problem.