Howto remove duplicate dictionary source from Gnome dictionary Ubuntu 9.10

I face the problem that when I have duplicate dictionary source
and I cannot remove it. It return message saying "Unable to remove..."

Then I found this page. "Trekky0623" have the same problem of mine.
 
And thanks to Trekky0623 who found howto remove those duplicate source out from the program.
 
By go to directory "[yourUsername]/.gnome2/gnome-dictionary/" and simply delete it.

Well done  Trekky062.