Index: wp-includes/script-loader.php
===================================================================
--- wp-includes/script-loader.php	(revision 7162)
+++ wp-includes/script-loader.php	(working copy)
@@ -48,15 +48,6 @@
 		) );
 
 		$this->add( 'autosave', '/wp-includes/js/autosave.js', array('schedule', 'wp-ajax-response'), '20080221' . mt_rand());
-		if ( ! $autosave_interval = get_option( 'autosave_interval' ) )
-			$autosave_interval = 60;
-		$this->localize( 'autosave', 'autosaveL10n', array(
-			'autosaveInterval' => $autosave_interval,
-			'previewPageText' => __('View this Page'),
-			'previewPostText' => __('View this Post'),
-			'requestFile' => get_option( 'siteurl' ) . '/wp-admin/admin-ajax.php',
-			'savingText' => __('Saving Draft…')
-		) );
 
 		$this->add( 'wp-ajax', '/wp-includes/js/wp-ajax.js', array('prototype'), '20070306');
 		$this->localize( 'wp-ajax', 'WPAjaxL10n', array(
@@ -487,6 +478,13 @@
 // These localizations require information that may not be loaded even by init
 function wp_just_in_time_script_localization() {
 	wp_localize_script( 'tiny_mce', 'wpTinyMCEConfig', array( 'defaultEditor' => wp_default_editor() ) );
+	wp_localize_script( 'autosave', 'autosaveL10n', array(
+		'autosaveInterval' => AUTOSAVE_INTERVAL,
+		'previewPageText' => __('View this Page'),
+		'previewPostText' => __('View this Post'),
+		'requestFile' => get_option( 'siteurl' ) . '/wp-admin/admin-ajax.php',
+		'savingText' => __('Saving Draft…')
+	) );
 }
 
 add_filter( 'wp_print_scripts', 'wp_just_in_time_script_localization' );
Index: wp-admin/includes/schema.php
===================================================================
--- wp-admin/includes/schema.php	(revision 7162)
+++ wp-admin/includes/schema.php	(working copy)
@@ -249,10 +249,9 @@
 	add_option('thumbnail_crop', 1);
 	add_option('medium_size_w', 300);
 	add_option('medium_size_h', 300);
-	add_option('autosave_interval', 60);
 
 	// Delete unused options
-	$unusedoptions = array ('blodotgsping_url', 'bodyterminator', 'emailtestonly', 'phoneemail_separator', 'smilies_directory', 'subjectprefix', 'use_bbcode', 'use_blodotgsping', 'use_phoneemail', 'use_quicktags', 'use_weblogsping', 'weblogs_cache_file', 'use_preview', 'use_htmltrans', 'smilies_directory', 'fileupload_allowedusers', 'use_phoneemail', 'default_post_status', 'default_post_category', 'archive_mode', 'time_difference', 'links_minadminlevel', 'links_use_adminlevels', 'links_rating_type', 'links_rating_char', 'links_rating_ignore_zero', 'links_rating_single_image', 'links_rating_image0', 'links_rating_image1', 'links_rating_image2', 'links_rating_image3', 'links_rating_image4', 'links_rating_image5', 'links_rating_image6', 'links_rating_image7', 'links_rating_image8', 'links_rating_image9', 'weblogs_cacheminutes', 'comment_allowed_tags', 'search_engine_friendly_urls', 'default_geourl_lat', 'default_geourl_lon', 'use_default_geourl', 'weblogs_xml_url', 'new_users_can_blog', '_wpnonce', '_wp_http_referer', 'Update', 'action', 'rich_editing');
+	$unusedoptions = array ('blodotgsping_url', 'bodyterminator', 'emailtestonly', 'phoneemail_separator', 'smilies_directory', 'subjectprefix', 'use_bbcode', 'use_blodotgsping', 'use_phoneemail', 'use_quicktags', 'use_weblogsping', 'weblogs_cache_file', 'use_preview', 'use_htmltrans', 'smilies_directory', 'fileupload_allowedusers', 'use_phoneemail', 'default_post_status', 'default_post_category', 'archive_mode', 'time_difference', 'links_minadminlevel', 'links_use_adminlevels', 'links_rating_type', 'links_rating_char', 'links_rating_ignore_zero', 'links_rating_single_image', 'links_rating_image0', 'links_rating_image1', 'links_rating_image2', 'links_rating_image3', 'links_rating_image4', 'links_rating_image5', 'links_rating_image6', 'links_rating_image7', 'links_rating_image8', 'links_rating_image9', 'weblogs_cacheminutes', 'comment_allowed_tags', 'search_engine_friendly_urls', 'default_geourl_lat', 'default_geourl_lon', 'use_default_geourl', 'weblogs_xml_url', 'new_users_can_blog', '_wpnonce', '_wp_http_referer', 'Update', 'action', 'rich_editing', 'autosave_interval');
 	foreach ($unusedoptions as $option) :
 		delete_option($option);
 	endforeach;
Index: wp-admin/includes/post.php
===================================================================
--- wp-admin/includes/post.php	(revision 7162)
+++ wp-admin/includes/post.php	(working copy)
@@ -18,7 +18,7 @@
 		$post =& get_post( $post_ID );
 		$now = time();
 		$then = strtotime($post->post_date_gmt . ' +0000');
-		$delta = get_option( 'autosave_interval' ) / 2;
+		$delta = AUTOSAVE_INTERVAL / 2;
 		if ( ($now - $then) < $delta )
 			return $post_ID;
 	}
@@ -654,7 +654,7 @@
 	$lock = get_post_meta( $post->ID, '_edit_lock', true );
 	$last = get_post_meta( $post->ID, '_edit_last', true );
 
-	$time_window = apply_filters( 'wp_check_post_lock_window', get_option( 'autosave_interval' ) * 2 );
+	$time_window = apply_filters( 'wp_check_post_lock_window', AUTOSAVE_INTERVAL * 2 );
 
 	if ( $lock && $lock > time() - $time_window && $last != $current_user->ID )
 		return $last;
Index: wp-admin/includes/admin.php
===================================================================
--- wp-admin/includes/admin.php	(revision 7162)
+++ wp-admin/includes/admin.php	(working copy)
@@ -1,5 +1,8 @@
 <?php
 
+if ( !defined( 'AUTOSAVE_INTERVAL' ) )
+	define( 'AUTOSAVE_INTERVAL', 60 );
+
 require_once(ABSPATH . 'wp-admin/includes/bookmark.php');
 require_once(ABSPATH . 'wp-admin/includes/comment.php');
 require_once(ABSPATH . 'wp-admin/includes/file.php');