If you see anything Nation related in the search bar, try control clicking then click Delete.
If that's not possible, check Safari > Preferences > Extensions.
If it's not there then it's been installed as a plug-in, input method, input manager, or a scripting addition.
- /Library/Internet Plug-Ins/
- /Library/Input Methods/
- /Library/InputManagers/
- /Library/ScriptingAdditions
- ~/Library/Internet Plug-Ins/
- ~/Library/Input Methods/
- ~/Library/InputManagers/
- ~/Library/ScriptingAdditions
The first four locations listed are in the root-level Library on your hard disk, not the user-level Library in your Home folder.The tilde (~) represents your Home folder.
To find the Home folder in OS X Lion, open the Finder, hold the Option key, and choose Go > Library.