[QUOTE=nicolai;1245815]You are right.
in xterm:
[B]gconftool -u /desktop/meego/background/portrait/history

Thank you so much!

I had to run only the above command to remove the two incriminated wallpapers from the imagehistory in my wallpaper selection dialog. I mean

gconftool -u /desktop/meego/background/portrait/original_filename

was not necessary.

This maybe because, how I said before, I removed the wallpapers before with filebox from <home/user/wallpapers> and <home/user/MyDocs/wallpapers>.