My colleague that is using the EeePC says he notices a slightly longer battery life (around 5 working hours, using SQLServer, IIS and Visual Studio 2005, without anything turned off), but he doesn't notice anything else.
Should be easy, right? Should be, but isn't. Here's how it works. Anyone using a valid, activated version of Windows Vista (or XP) qualifies for any Windows 7 Upgrade version. But in order to perform a "true" (or "in-place") upgrade, you must be upgrading to an equivalent, or higher-end, Windows 7 version
Looking at this chart, you can see that an in-place upgrade from, say, Windows Vista Home Premium to Windows 7 Home Premium is perfectly acceptable. As is an in-place upgrade from Windows Vista Home Premium to Windows 7 Professional or Ultimate.
But what if you want to upgrade from Windows Vista Business to Windows 7 Home Premium? In that and other similar cases, an in-place upgrade is impossible. So you will have to perform a migration,
I get the impression that the Windows 7 launch is a lot like seeing an old girlfriend suddenly show up on your doorstep wanting to get back together. She's had some work done, apparently: stomach stapling to take off some of the weight, breast augmentation, and a radical nosejob to make her look as much like your current girlfriend as medical science will allow.