Turn off Windows Messenger IM client
A fresh install of Windows will have the Microsoft Messenger IM client set to start on boot up. To turn it off:1) Start >> Run >> gpedit.msc, and then press ENTER
2) Double-click the following items to expand them:
* Local Computer Policy
* Computer Configuration
* Administrative Templates
* Windows Components
* Windows Messenger
3) Set the option "Do not allow Windows Messenger to run", and then click Enabled.
4. Set "Do not automatically start Windows Messenger initially" to enabled.