Modify plugin geommunitylocator text

I wanted to modify the language text for plg_geommunitylocator for JomSocial.

In the JomSocial activity stream, the Geommunity Plugin language text says: "aquadir has just updated location on map with Geommunity Locator"
I want to modify the above text. I couldn't find a language file for this.
What file do I need to modify and where would it be located?

I am using Joomla 1.5.26 and JomSocial 2.6.1

Please see: planethop.com/socialize and also attached screenshot.

Hello

Plugins language files are all located in
ADMINISTRATOR/languages
...en-GB/en-GB.plg_geommunitylocator.ini

Hope it helps

Thanks very much!