Genesis Comment Hacking - change the time and date. You can put this in your functions.php file. If you do this, your comments will show a relative date (e.g. posted 10 days ago). The original genesis code is in the /genesis/lib/structure/comments.php file.

genesis_comments_functions.php

function my_comment_listing($comment, $args, $depth){

  $GLOBALS['comment'] = $comment; ?>

	<li <?php comment_class(); ?> id="comment-<?php comment_ID(); ?>">

		<?php do_action( 'genesis_before_comment' ); ?>

		<div class="comment-header">
			<div class="comment-author vcard">
				<?php echo get_avatar( $comment, $size = $args['avatar_size'] ); ?>
				<?php printf( __( '<cite class="fn">%s</cite> <span class="says">%s:</span>', 'genesis' ), get_comment_author_link(), apply_filters( 'comment_author_says_text', __( 'says', 'genesis' ) ) ); ?>
		 	</div><!-- end .comment-author -->

			<div class="comment-meta commentmetadata">
				<a href="<?php echo esc_url( get_comment_link( $comment->comment_ID ) ); ?>">
				<?php echo human_time_diff( get_comment_time('U'), current_time('timestamp') ) . ' ago';?>
				<!-- <?php printf( __( '%1$s at %2$s', 'genesis' ), get_comment_date(), get_comment_time() ); ?>--></a>
				<?php edit_comment_link( __( '(Edit)', 'genesis' ), '' ); ?>
			</div><!-- end .comment-meta -->
		</div>

		<div class="comment-content">
			<?php if ( $comment->comment_approved == '0' ) : ?>
				<p class="alert"><?php echo apply_filters( 'genesis_comment_awaiting_moderation', __( 'Your comment is awaiting moderation.', 'genesis' ) ); ?></p>
			<?php endif; ?>

			<?php comment_text(); ?>
		</div><!-- end .comment-content -->

		<div class="reply">
			<?php comment_reply_link( array_merge( $args, array( 'depth' => $depth, 'max_depth' => $args['max_depth'] ) ) ); ?>
		</div>

		<?php do_action( 'genesis_after_comment' );

	/** No ending </li> tag because of comment threading */

}

add_filter('genesis_comment_list_args', 'my_comment_filter');

function my_comment_filter($args){
	$args['callback'] = 'my_comment_listing'; 
	
	return $args;
}