Responding to a lawsuit alleging that "Vista capable" buttons on new PCs don't mean they're actually beefy enough to run all of Vista's functions (like the oh-so-fancy but oh-so-pointless Flip 3D), Microsoft has
retconned clarified what the logo means.
Original description: "Through the Windows Vista Capable program, Windows XP-based PCs that are powerful enough to run Windows Vista are now available... The Windows Vista Capable logo is designed to assure customers that the PCs they buy today will be ready for an upgrade to Windows Vista and can run the core experiences of Windows Vista."
New and improved version: "A new PC running Windows XP that carries the Windows Vista Capable PC logo can run Windows Vista. All editions of Windows Vista will deliver core experiences such as innovations in organizing and finding information, security, and reliability. All Windows Vista Capable PCs will run these core experiences at a minimum. Some features available in the premium editions of Windows Vista — like the new Windows Aero user experience — may require advanced or additional hardware."
I guess it's kind of a "Wow" moment when you're an average consumer and buy a computer expecting it to run what the fancy sticker says it will and then it totally won't. I mean, in my dictionary, capable implies the ability to do something, not choke on it.