That's it. More specifically, it's the organisation.

I hate that they took away the ability to enter the registered name in setup for Windows Vista. It is really annoying changing it every time you install software that retrieves the values from the registry (For various reasons).

Worst part is, if you run the x64 versions, you have to change it twice (Regular and Wow6432Node). It's also not set to the name you use during the OOBE-esque experience. While the regular one is set, the Wow6432Node version isn't and if I remember correctly, it sits as name: "Windows User" company: "Microsoft Corporation".

While I know enough about the registry to change it for myself, you can't expect everyone to know how to do this, plus the dangers involved.