The longer you use Windows the slower it gets. Your hardware isn't getting slower--it's Windows that's getting clogged up. One of the main reasons for this is garbage left over by programs that don't get removed properly. Lazy programmers think that what you don't see doesn't hurt you and so they only include the main program components in the Uninstall entry in the Windows Control Panel. The rest isn't visible but it's still there, adding more and more unnecessary ballast to your Windows setup with every program you remove. Many programs leave hundreds of Registry entries, files and even drivers and Windows services in place after they have been uninstalled.
Changes in version 2 include a Reinstaller, in case you change your mind; a Drag & Drop Desktop Uninstaller and an Internet Explorer Add-Ons Manager.