Index: wp-content/themes/twentyten/header.php
===================================================================
--- wp-content/themes/twentyten/header.php	(revision 13616)
+++ wp-content/themes/twentyten/header.php	(working copy)
@@ -30,7 +30,8 @@
 	<div id="header">
 		<div id="masthead">
 			<div id="branding">
-				<div id="site-title"><span><a href="<?php echo home_url('/'); ?>" title="<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?>" rel="home"><?php bloginfo( 'name' ); ?></a></span></div>
+				<?php $header_element = is_front_page() ? 'h1' : 'div'; ?>
+				<<?php echo $header_element; ?> id="site-title"><span><a href="<?php echo home_url('/'); ?>" title="<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?>" rel="home"><?php bloginfo( 'name' ); ?></a></span></<?php echo $header_element; ?>>
 				<div id="site-description"><?php bloginfo( 'description' ); ?></div>
 
 				<?php
Index: wp-content/themes/twentyten/onecolumn-page.php
===================================================================
--- wp-content/themes/twentyten/onecolumn-page.php	(revision 13616)
+++ wp-content/themes/twentyten/onecolumn-page.php	(working copy)
@@ -12,7 +12,9 @@
 <?php the_post(); ?>
 
 				<div id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
+					<?php if(!is_front_page()): ?>
 					<h1 class="entry-title"><?php the_title(); ?></h1>
+					<?php endif; ?>
 					<div class="entry-content">
 						<?php the_content(); ?>
 						<?php wp_link_pages( 'before=<div class="page-link">' . __( 'Pages:', 'twentyten' ) . '&after=</div>'); ?>
Index: wp-content/themes/twentyten/page.php
===================================================================
--- wp-content/themes/twentyten/page.php	(revision 13616)
+++ wp-content/themes/twentyten/page.php	(working copy)
@@ -6,7 +6,9 @@
 <?php the_post(); ?>
 
 				<div id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
+					<?php if(!is_front_page()) : ?>
 					<h1 class="entry-title"><?php the_title(); ?></h1>
+					<?php endif; ?>
 					<div class="entry-content">
 						<?php the_content(); ?>
 						<?php wp_link_pages( 'before=<div class="page-link">' . __( 'Pages:', 'twentyten' ) . '&after=</div>'); ?>