Windows Vista has a feature called Remote Differential Compression, which is used to computes the difference between sizes of files over a networks and moves them with as little bandwidth as possible. This is useful and saves bandwidth only if you are on a local area network and share files over it. For a home user, this service only consumes system resources. You can turn it off if you want it. Here is how :
- Press the keyboard combination Windows logo key + R to bring up the Run dialog.
- Type OptionalFeatures.exe in the Run dialog and press Enter.
- This would open the Windows Features window. Scroll down and un-check the checkbox labeled Remote Differential Compression,
- Click OK to save the settings.