The Naomi Web Filter when Installs on your system gives a passwords and without giving the passwords you cannot uninstall it properly. If you forget the password then without using some tools it is not possible to remove it.

You need these tools to uninstall Naomi Web Filter completely:

• Process Explorer
• Unlocker
• MoveOnBoot
• CCleaner

First you need to use the Process Explorer instead of Task manager to check all the running processes. Using Process Explorer you will see all the files and folders that each process uses and you just need to find the Naomi and kill the process. After killing all the Naomi Processes you can use the windows explorer to delete all the Naomi Files and folders from your Program files. In case any files refuse to delete, you can use the unlocker or MoveOnBoot to remove them. After all these you have to remove all the registry key that associated to Naomi Web Filter. To do so you can use CCleaner or similar applications.

In case you find this way little difficult, you can directly use an uninstaller utility like Perfect Uninstaller for windows to remove Naomi Web Filter and its instances from your computer completely. You can easily find these products on the web.