The service pack also includes all previously released security, stability and performance updates for Windows 7. Like I said, not very exciting.

But there is one interesting nugget to note if you're an enterprise user: Microsoft is that to install the final version of Internet Explorer 9, whenever it's released. If you don't have the service pack installed, IE9 will take the liberty of installing additional operating system components that are already part of SP1. With , that's good news for IT pros who may have been reluctant to upgrade in lieu of the service pack.

If you're going to update, Microsoft recommends backing up your computer to an external hard drive, DVD/CD or network location. Don't worry; Windows 7's built-in backup feature is .

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