I really haven’t noticed anything different on my system. Personally, I decided to just jump in and install the service pack. If you are a home user you might want to wait a month or two and see if any problems crop up, assuming you are up to date on your security patches. If you are a business user then it makes sense to start testing the service pack to ensure compatibility with all of your office software. If you do not regularly use automatic updates to keep your operating system up to date, then it is a good idea to install Windows 7 service pack 1 to get your operating system caught up on the security patches that are included in the service pack. Unlike Windows XP service pack 2, which included significant security updates, or Windows XP service pack 3 which is required for support from Microsoft, Windows 7 service pack 1 does not have any significantly compelling updates for most users.
