Latin characters in hardstatus/caption

[Simón]

Hi,
I'm using screen v4.0.3 compiled by me in a Ubuntu Natty 64bits.
But screen displays the latin and special chars incorrectly. See this 
screenshot: http://i.stack.imgur.com/8icXQ.png
It's a capture inside of screen, you can see the locale and that the 
special chars in screen are showed well but no in hardstatus (in window 
title) and caption (lastline).
What's the problem?
This worked to me before but I have to reinstall my SO and now it 
doesn't work.
Thanks in advanced. Regards.