I was excited about Windows Vista. I can't say I'm that happy about Windows 7. I installed it on my netbook, but I barely even use it anymore. I'm annoyed about a few things in Windows XP, but Windows 7, at least the release candidate, is less stable. It looks nice; very visually appealing, and the wallpaper is wonderful. I have a problem with Firefox crashing incessantly on Windows 7 though, which on my netbook makes it intolerable.
Fake Steve Jobs took on the Windows 7 upgrade path, which looks painful. (He also provided Apple's upgrade path). I can't imagine why Microsoft has to release so many versions of the same thing, especially considering that every single Windows DVD contains the exact same information. You can install any version of Windows Vista or Windows 7 from the same DVD. The only thing different is the license key. For instance, my Windows Vista Home Premium Upgrade CD can install Windows Vista Ultimate Full, provided I have a license key. The license key on the box only works with Windows Vista Home Premium Upgrade though.
Before Windows Vista came out, I worked really hard on "switching" to Linux. I was sick of Microsoft, and I couldn't afford a Mac, so I tried to get Linux to work. I couldn't. I got tired of spending hours hacking away on my wireless chipset, only to have to repeat the process the next time I rebooted. I also had trouble with Flash and Java. I'm not a big fan of the command line. I don't like having to remember to type sudo before every command, or su to root before I try to do anything. I have heard that Linux has improved over the years. I haven't had the time or desire to mess with it lately, but I did come across something interesting: Ubuntu has a Netbook Remix. That might be worth checking out.