Getting Rid of WordPress Comments Off
Perhaps you can override this; however, if you want a quick hack to not display "Comments Off" on Wordpress blogs that you don't have comments on, find these lines in wp-includes/comment-template.php:
if ( false === $zero ) $zero = __( 'No Comments' );
if ( false === $one ) $one = __( '1 Comment' );
if ( false === $more ) $more = __( '% Comments' );
if ( false === $none ) $none = __( 'Comments Off' );
Just change "Comments Off" to whatever you want.
Also check out your theme and look for comments_popup_link