RĂ³mulo,
I just wanted to let you know we have a fix planned for this in the 6.1.1 release of JFBConnect, due out in a week or so. The language string will be updated with a network variable, so it will look like:
%s had a status update on %s
The first %s is the user's name, the second %s will be the network the status was imported from.
This will work for all posts going forward from that point. Any previous posts will still say they come from Facebook as we can't retroactively fix those.
I hope that helps, and thanks again for pointing this problem out!
Alex