I just noticed when creating a new board without a description I get this as default description:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "[url=http://www.w3.org/TR/REC-html40/loose.dtd]http://www.w3.org/TR/REC-html40/loose.dtd[/url]">
<?xml encoding="UTF-8">
Editing the board and adding a description solves the problem.
Maybe I should open a new topic for this, but I'll post it here since it's reated to board description.
If I do a "View page source" from my browser I noticed that the meta title and meta description are the same. This is happening on 1.1.9 and not on 2.0 dev version.