Look for this in your file skins/nautica2/_main.php

      <h1><a href="<?php bloginfo('url'); ?>"><?php $Blog->disp( 'name', 'htmlbody' ) ?></a><br />
<?php $Blog->disp( 'tagline', 'htmlbody' ) ?>
	      </h1>

replace it with

 <br />

I did it like you tell me and it is still there.

Still, thank you for trying.

Got it! I was making the change trought the template editor. I dit it on my computer, uploaded main.php and it works!

Ty Topanga!

the template editor changes the file skin/custom/_main.php

so indeed, if you change another file, it has no effect.