diff --git a/wp-admin/admin-header.php b/wp-admin/admin-header.php
index 9c161f7a0f..4ef9edb9c0 100644
--- a/wp-admin/admin-header.php
+++ b/wp-admin/admin-header.php
@@ -77,8 +77,13 @@ $blog_name = get_bloginfo('name', 'display');
 if ( '' == $blog_name )
 	$blog_name = ' ';
 $title_class = '';
-if ( function_exists('mb_strlen') && mb_strlen($blog_name, 'UTF-8') > 30 )
-	$title_class = 'class="long-title"';
+if ( function_exists('mb_strlen') ) {
+	if ( mb_strlen($blog_name, 'UTF-8') > 30 )
+		$title_class = 'class="long-title"';
+} else {
+	if ( strlen($blog_name) > 30 )
+		$title_class = 'class="long-title"';
+}
 ?>
 
 <img id="logo50" src="images/wp-logo.gif" alt="" /> <h1 <?php echo $title_class ?>><a href="<?php echo trailingslashit( get_bloginfo('url') ); ?>" title="<?php _e('Visit site') ?>"><?php echo $blog_name ?></a></h1>
diff --git a/wp-admin/edit-tags.php b/wp-admin/edit-tags.php
index 1d4070958a..f9adb6118d 100644
--- a/wp-admin/edit-tags.php
+++ b/wp-admin/edit-tags.php
@@ -247,30 +247,29 @@ else
 </div>
 
 <?php if ( $can_manage ) {
-	do_action('add_tag_form_pre', $tag); ?>
+	do_action('add_tag_form_pre'); ?>
 
 <div class="form-wrap">
 <h3><?php _e('Add a New Tag'); ?></h3>
 <div id="ajax-response"></div>
 <form name="addtag" id="addtag" method="post" action="edit-tags.php" class="add:the-list: validate">
 <input type="hidden" name="action" value="addtag" />
-<input type="hidden" name="tag_ID" value="<?php echo $tag->term_id ?>" />
 <?php wp_original_referer_field(true, 'previous'); wp_nonce_field('add-tag'); ?>
 
 <div class="form-field form-required">
 	<label for="name"><?php _e('Tag name') ?></label>
-	<input name="name" id="name" type="text" value="<?php if ( isset( $tag->name ) ) echo attribute_escape($tag->name); ?>" size="40" aria-required="true" />
+	<input name="name" id="name" type="text" value="" size="40" aria-required="true" />
     <p><?php _e('The name is how the tag appears on your site.'); ?></p>
 </div>
 
 <div class="form-field">
 	<label for="slug"><?php _e('Tag slug') ?></label>
-	<input name="slug" id="slug" type="text" value="<?php if ( isset( $tag->slug ) ) echo attribute_escape(apply_filters('editable_slug', $tag->slug)); ?>" size="40" />
+	<input name="slug" id="slug" type="text" value="" size="40" />
     <p><?php _e('The &#8220;slug&#8221; is the URL-friendly version of the name. It is usually all lowercase and contains only letters, numbers, and hyphens.'); ?></p>
 </div>
 
 <p class="submit"><input type="submit" class="button" name="submit" value="<?php _e('Add Tag'); ?>" /></p>
-<?php do_action('edit_tag_form', $tag); ?>
+<?php do_action('add_tag_form'); ?>
 </form></div>
 <?php } ?>
 
diff --git a/wp-admin/includes/dashboard.php b/wp-admin/includes/dashboard.php
index 1a17ee1533..034b05c479 100644
--- a/wp-admin/includes/dashboard.php
+++ b/wp-admin/includes/dashboard.php
@@ -37,8 +37,8 @@ function wp_dashboard_setup() {
 			'home' => get_option('home'),
 			'link' => apply_filters( 'dashboard_incoming_links_link', 'http://blogsearch.google.com/blogsearch?hl=en&scoring=d&partner=wordpress&q=link:' . trailingslashit( get_option('home') ) ),
 			'url' => apply_filters( 'dashboard_incoming_links_feed', 'http://blogsearch.google.com/blogsearch_feeds?hl=en&scoring=d&ie=utf-8&num=10&output=rss&partner=wordpress&q=link:' . trailingslashit( get_option('home') ) ),
-			'items' => $widget_options['dashboard_incoming_links']['items'],
-			'show_date' => $widget_options['dashboard_incoming_links']['show_date']
+			'items' => isset($widget_options['dashboard_incoming_links']['items']) ? $widget_options['dashboard_incoming_links']['items'] : 10,
+			'show_date' => isset($widget_options['dashboard_incoming_links']['show_date']) ? $widget_options['dashboard_incoming_links']['show_date'] : false
 		);
 	}
 	wp_add_dashboard_widget( 'dashboard_incoming_links', __( 'Incoming Links' ), 'wp_dashboard_incoming_links', 'wp_dashboard_incoming_links_control' );
diff --git a/wp-admin/includes/post.php b/wp-admin/includes/post.php
index 977b1433e5..849a4ff96b 100644
--- a/wp-admin/includes/post.php
+++ b/wp-admin/includes/post.php
@@ -25,8 +25,8 @@ function _wp_translate_postdata( $update = false, $post_data = null ) {
 
 	if ( $update )
 		$post_data['ID'] = (int) $post_data['post_ID'];
-	$post_data['post_content'] = $post_data['content'];
-	$post_data['post_excerpt'] = $post_data['excerpt'];
+	$post_data['post_content'] = isset($post_data['content']) ? $post_data['content'] : '';
+	$post_data['post_excerpt'] = isset($post_data['excerpt']) ? $post_data['excerpt'] : '';
 	$post_data['post_parent'] = isset($post_data['parent_id'])? $post_data['parent_id'] : '';
 	if ( isset($post_data['trackback_url']) )
 		$post_data['to_ping'] = $post_data['trackback_url'];
@@ -71,7 +71,7 @@ function _wp_translate_postdata( $update = false, $post_data = null ) {
 	if ( isset($post_data['pending']) && '' != $post_data['pending'] )
 		$post_data['post_status'] = 'pending';
 
-	$previous_status = get_post_field('post_status',  $post_data['ID']);
+	$previous_status = get_post_field('post_status',  isset($post_data['ID']) ? $post_data['ID'] : $post_data['temp_ID']);
 
 	// Posts 'submitted for approval' present are submitted to $_POST the same as if they were being published.
 	// Change status from 'publish' to 'pending' if user lacks permissions to publish or to resave published posts.
diff --git a/wp-admin/includes/template.php b/wp-admin/includes/template.php
index 08b633a296..1f9f746ea1 100644
--- a/wp-admin/includes/template.php
+++ b/wp-admin/includes/template.php
@@ -3166,7 +3166,7 @@ function screen_meta($screen) {
 	<form id="adv-settings" action="" method="get">
 	<div class="metabox-prefs">
 <?php 
-	if ( !meta_box_prefs($screen) ) {
+	if ( !meta_box_prefs($screen) && isset($column_screens[$screen]) ) {
 		manage_columns_prefs($column_screens[$screen]);
 		wp_nonce_field( 'hiddencolumns', 'hiddencolumnsnonce', false ); 
 	}
diff --git a/wp-admin/install.php b/wp-admin/install.php
index 97eeb45660..de5b970d6d 100644
--- a/wp-admin/install.php
+++ b/wp-admin/install.php
@@ -89,9 +89,9 @@ switch($step) {
 
 		display_header();
 		// Fill in the data we gathered
-		$weblog_title = stripslashes($_POST['weblog_title']);
-		$admin_email = stripslashes($_POST['admin_email']);
-		$public = (int) $_POST['blog_public'];
+		$weblog_title = isset($_POST['weblog_title']) ? stripslashes($_POST['weblog_title']) : '';
+		$admin_email = isset($_POST['admin_email']) ? stripslashes($_POST['admin_email']) : '';
+		$public = isset($_POST['blog_public']) ? (int) $_POST['blog_public'] : 0;
 		// check e-mail address
 		if (empty($admin_email)) {
 			// TODO: poka-yoke
diff --git a/wp-admin/page.php b/wp-admin/page.php
index 7455d52ff5..1b5ddbe99b 100644
--- a/wp-admin/page.php
+++ b/wp-admin/page.php
@@ -34,18 +34,18 @@ function redirect_page($page_ID) {
 	} elseif ( 'post' == $_POST['originalaction'] && !empty($_POST['mode']) && 'sidebar' == $_POST['mode'] ) {
 		$location = 'sidebar.php?a=b';
 	} elseif ( isset($_POST['save']) && ( empty($referredby) || $referredby == $referer || 'redo' != $referredby ) ) {
-		if ( $_POST['_wp_original_http_referer'] && strpos( $_POST['_wp_original_http_referer'], '/wp-admin/page.php') === false && strpos( $_POST['_wp_original_http_referer'], '/wp-admin/page-new.php') === false )
+		if ( isset($_POST['_wp_original_http_referer']) && strpos( $_POST['_wp_original_http_referer'], '/wp-admin/page.php') === false && strpos( $_POST['_wp_original_http_referer'], '/wp-admin/page-new.php') === false )
 			$location = add_query_arg( array(
 				'_wp_original_http_referer' => urlencode( stripslashes( $_POST['_wp_original_http_referer'] ) ),
 				'message' => 1
 			), get_edit_post_link( $page_ID, 'url' ) );
 		else
 			$location = add_query_arg( 'message', 4, get_edit_post_link( $page_ID, 'url' ) );
-	} elseif ($_POST['addmeta']) {
+	} elseif ( isset($_POST['addmeta']) ) {
 		$location = add_query_arg( 'message', 2, wp_get_referer() );
 		$location = explode('#', $location);
 		$location = $location[0] . '#postcustom';
-	} elseif ($_POST['deletemeta']) {
+	} elseif ( isset($_POST['deletemeta']) ) {
 		$location = add_query_arg( 'message', 3, wp_get_referer() );
 		$location = explode('#', $location);
 		$location = $location[0] . '#postcustom';
diff --git a/wp-admin/post.php b/wp-admin/post.php
index fd1c4973c1..fc7d6e5cba 100644
--- a/wp-admin/post.php
+++ b/wp-admin/post.php
@@ -39,7 +39,7 @@ function redirect_post($post_ID = '') {
 		elseif ( isset($_POST['publish']) )
 			$location = 'sidebar.php?a=b';
 	} elseif ( ( isset($_POST['save']) || isset($_POST['publish']) ) && ( empty($referredby) || $referredby == $referer || 'redo' != $referredby ) ) {
-		if ( $_POST['_wp_original_http_referer'] && strpos( $_POST['_wp_original_http_referer'], '/wp-admin/post.php') === false && strpos( $_POST['_wp_original_http_referer'], '/wp-admin/post-new.php') === false )
+		if ( isset($_POST['_wp_original_http_referer']) && strpos( $_POST['_wp_original_http_referer'], '/wp-admin/post.php') === false && strpos( $_POST['_wp_original_http_referer'], '/wp-admin/post-new.php') === false )
 			$location = add_query_arg( array(
 				'_wp_original_http_referer' => urlencode( stripslashes( $_POST['_wp_original_http_referer'] ) ),
 				'message' => 1
diff --git a/wp-includes/comment.php b/wp-includes/comment.php
index 1ccb236c12..85c0af926e 100644
--- a/wp-includes/comment.php
+++ b/wp-includes/comment.php
@@ -1392,11 +1392,12 @@ function pingback($content, $post_ID) {
 	foreach ( (array) $post_links_temp[0] as $link_test ) :
 		if ( !in_array($link_test, $pung) && (url_to_postid($link_test) != $post_ID) // If we haven't pung it already and it isn't a link to itself
 				&& !is_local_attachment($link_test) ) : // Also, let's never ping local attachments.
-			$test = parse_url($link_test);
-			if ( isset($test['query']) )
-				$post_links[] = $link_test;
-			elseif ( ($test['path'] != '/') && ($test['path'] != '') )
-				$post_links[] = $link_test;
+			if ( $test = @parse_url($link_test) ) {
+				if ( isset($test['query']) )
+					$post_links[] = $link_test;
+				elseif ( ($test['path'] != '/') && ($test['path'] != '') )
+					$post_links[] = $link_test;
+			}
 		endif;
 	endforeach;
 
diff --git a/wp-includes/js/autosave.js b/wp-includes/js/autosave.js
index 9289864370..8459bc50c3 100644
--- a/wp-includes/js/autosave.js
+++ b/wp-includes/js/autosave.js
@@ -179,6 +179,7 @@ var autosave = function() {
 		post_data["excerpt"] = jQuery("#excerpt").val();
 	if ( jQuery("#post_author").size() )
 		post_data["post_author"] = jQuery("#post_author").val();
+	post_data["user_ID"] = jQuery("#user-id").val();
 
 	// Don't run while the TinyMCE spellcheck is on.  Why?  Who knows.
 	if ( rich && tinyMCE.activeEditor.plugins.spellchecker && tinyMCE.activeEditor.plugins.spellchecker.active ) {
diff --git a/wp-includes/post.php b/wp-includes/post.php
index 33e6a891ea..8d64004b65 100644
--- a/wp-includes/post.php
+++ b/wp-includes/post.php
@@ -1336,6 +1336,10 @@ function wp_insert_post($postarr = array(), $wp_error = false) {
 		$post_category = array(get_option('default_category'));
 	}
 
+	//Set the default tag list
+	if ( !isset($tags_input) )
+		$tags_input = array();
+
 	if ( empty($post_author) )
 		$post_author = $user_ID;
 
diff --git a/wp-includes/query.php b/wp-includes/query.php
index 7202996ad9..75f4954d16 100644
--- a/wp-includes/query.php
+++ b/wp-includes/query.php
@@ -1691,7 +1691,7 @@ class WP_Query {
 				$q['name'] = $q['pagename'];
 				$where .= " AND ($wpdb->posts.ID = '$reqpage')";
 				$reqpage_obj = get_page($reqpage);
-				if ( 'attachment' == $reqpage_obj->post_type ) {
+				if ( is_object($reqpage_obj) && 'attachment' == $reqpage_obj->post_type ) {
 					$this->is_attachment = true;
 					$this->is_page = true;
 					$q['attachment_id'] = $reqpage;
diff --git a/wp-includes/script-loader.php b/wp-includes/script-loader.php
index 800ded8952..f3b8e2b505 100644
--- a/wp-includes/script-loader.php
+++ b/wp-includes/script-loader.php
@@ -75,7 +75,7 @@ function wp_default_scripts( &$scripts ) {
 		'broken' => __('An unidentified error has occurred.')
 	) );
 
-	$scripts->add( 'autosave', '/wp-includes/js/autosave.js', array('schedule', 'wp-ajax-response'), '20081102' );
+	$scripts->add( 'autosave', '/wp-includes/js/autosave.js', array('schedule', 'wp-ajax-response'), '20081110' );
 
 	$scripts->add( 'wp-lists', '/wp-includes/js/wp-lists.js', array('wp-ajax-response'), '20080729' );
 	$scripts->localize( 'wp-lists', 'wpListL10n', array(
diff --git a/wp-includes/taxonomy.php b/wp-includes/taxonomy.php
index 13b759d881..e05f8dee71 100644
--- a/wp-includes/taxonomy.php
+++ b/wp-includes/taxonomy.php
@@ -840,11 +840,16 @@ function sanitize_term($term, $taxonomy, $context = 'display') {
 	if ( is_object($term) )
 		$do_object = true;
 
+	$term_id = $do_object ? $term->term_id : (isset($term['term_id']) ? $term['term_id'] : 0);
+
 	foreach ( (array) $fields as $field ) {
-		if ( $do_object )
-			$term->$field = sanitize_term_field($field, $term->$field, $term->term_id, $taxonomy, $context);
-		else
-			$term[$field] = sanitize_term_field($field, $term[$field], $term['term_id'], $taxonomy, $context);
+		if ( $do_object ) {
+			if ( isset($term->$field) )
+				$term->$field = sanitize_term_field($field, $term->$field, $term_id, $taxonomy, $context);
+		} else {
+			if ( isset($term[$field]) )
+				$term[$field] = sanitize_term_field($field, $term[$field], $term_id, $taxonomy, $context);
+		}
 	}
 
 	return $term;
diff --git a/wp-includes/widgets.php b/wp-includes/widgets.php
index 9e8c366b52..f66ddfd70d 100644
--- a/wp-includes/widgets.php
+++ b/wp-includes/widgets.php
@@ -1707,9 +1707,12 @@ function wp_widget_rss_control($widget_args) {
  * @param array $inputs Override default display options.
  */
 function wp_widget_rss_form( $args, $inputs = null ) {
+
 	$default_inputs = array( 'url' => true, 'title' => true, 'items' => true, 'show_summary' => true, 'show_author' => true, 'show_date' => true );
 	$inputs = wp_parse_args( $inputs, $default_inputs );
 	extract( $args );
+	extract( $inputs, EXTR_SKIP);
+
 	$number = attribute_escape( $number );
 	$title  = attribute_escape( $title );
 	$url    = attribute_escape( $url );
diff --git a/wp-settings.php b/wp-settings.php
index ac5184095f..6e7f443d5a 100644
--- a/wp-settings.php
+++ b/wp-settings.php
@@ -336,15 +336,11 @@ if ( !defined('WP_PLUGIN_URL') )
 if ( !defined('PLUGINDIR') )
 	define( 'PLUGINDIR', 'wp-content/plugins' ); // Relative to ABSPATH.  For back compat.
 
-if ( ! defined('WP_INSTALLING') ) {
-	// Used to guarantee unique hash cookies
-	$cookiehash = md5(get_option('siteurl'));
-	/**
-	 * Used to guarantee unique hash cookies
-	 * @since 1.5
-	 */
-	define('COOKIEHASH', $cookiehash);
-}
+/**
+ * Used to guarantee unique hash cookies
+ * @since 1.5
+ */
+define('COOKIEHASH', md5(get_option('siteurl')));
 
 /**
  * Should be exactly the same as the default value of SECRET_KEY in wp-config-sample.php