Windows Vista Annoyances
It took them +-5 years to rewrite the whole OS and it's only an incremental advance over the last release? I've never worked at a software company where something like that wouldn't get a few teams fired. At least if they argued that the changes were necessary to make future versions more stable, secure, and easier to add new functionality to then I could see it as a justification for only incremental advancement. But they're writing a new version of Windows for the next release too (MinWin or WinMin or whatever their codename for the kernel is--personally I don't know why they don't just call it DarWin and be honest for once about who they've been copying on-and-off for the past 20 years).