1. Go to your 'Start' menu and click 'Run'.
2. Type 'cmd' in the box inside of your 'Run' dialog.

3. Type 'net stop WuAuServ' to stop the Windows Automatic Update service. You cannot change the configuration without stopping it.
4. Type the following command in the command prompt: cd %windir%. This changes the directory to your Windows installation directory. Type also 'ren SoftwareDistribution SoftwareDistribution_.' The command you typed renames the configuration for Windows Update. When you restart the service, you'll get a fresh new configuration that won't leak out memory.
5. Type 'net start WuAuServ' to start the service again. Restart your computer after you finish.