This is not a suggestion – its the account of Tim Weber, BBC Business Editor of the BBC Website. It took 11 hours for one of his PCs to upgrade and that was after struggling with an install bug for several days.
Compared to the Snow Leopard upgrade it sounds tortuous.
The article is good and also covers his experience of installing Win7 on two other computers. There’s a short video of the system in action too. Read and watch here. BBC NEWS | Business | Windows 7: How to upgrade your computer