if ( '' == $user->user_nicename ) {
			$newname = sanitize_title( $user->user_nickname );
			$wpdb->update( $wpdb->users, array( 'user_nicename' => $newname ), array( 'ID' => $user->ID ) );
		}
	}

	$users = $wpdb->get_results( "SELECT ID, user_pass from $wpdb->users" );
	foreach ( $users as $row ) {
		if ( ! preg_match( '/^[A-Fa-f0-9]{32}$/', $row->user_pass ) ) {
			$wpdb->update( $wpdb->users, array( 'user_pass' => md5( $row->user_pass ) ), array( 'ID' => $row->ID ) );
		}
	}

	// Get the GMT offset, we'll use that later on
	$all_options = get_alloptions_110();

	$time_difference = $all_options->time_difference;

		$server_time = time() + date( 'Z' );
	$weblogger_time  = $server_time + $time_difference * HOUR_IN_SECONDS;
	$gmt_time        = time();

	$diff_gmt_server       = ( $gmt_time - $server_time ) / HOUR_IN_SECONDS;
	$diff_weblogger_server = ( $weblogger_time - $server_time ) / HOUR_IN_SECONDS;
	$diff_gmt_weblogger    = $diff_gmt_server - $diff_weblogger_server;
	$gmt_offset            = -$diff_gmt_weblogger;

	// Add a gmt_offset option, with value $gmt_offset
	add_option( 'gmt_offset', $gmt_offset );

	// Check if we already set the GMT fields (if we did, then
	// MAX(post_date_gmt) can't be '0000-00-00 00:00:00'
	// <michel_v> I just slapped myself silly for not thinking about it earlier
	$got_gmt_fields = ! ( $wpdb->get_var( "SELECT MAX(post_date_gmt) FROM $wpdb->posts" ) == '0000-00-00 00:00:00' );

	if ( ! $got_gmt_fields ) {

		// Add or subtract time to all dates, to get GMT dates
		$add_hours   = intval( $diff_gmt_weblogger );
		$add_minutes = intval( 60 * ( $diff_gmt_weblogger - $add_hours ) );
		$wpdb->query( "UPDATE $wpdb->posts SET post_date_gmt = DATE_ADD(post_date, INTERVAL '$add_hours:$add_minutes' HOUR_MINUTE)" );
		$wpdb->query( "UPDATE $wpdb->posts SET post_modified = post_date" );
		$wpdb->query( "UPDATE $wpdb->posts SET post_modified_gmt = DATE_ADD(post_modified, INTERVAL '$add_hours:$add_minutes' HOUR_MINUTE) WHERE post_modified != '0000-00-00 00:00:00'" );
		$wpdb->query( "UPDATE $wpdb->comments SET comment_date_gmt = DATE_ADD(comment_date, INTERVAL '$add_hours:$add_minutes' HOUR_MINUTE)" );
		$wpdb->query( "UPDATE $wpdb->users SET user_registered = DATE_ADD(user_registered, INTERVAL '$add_hours:$add_minutes' HOUR_MINUTE)" );
	}

}

/**
 * Execute changes made in WordPress 1.5.
 *
 * @ignore
 * @since 1.5.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 */
function upgrade_130() {
	global $wpdb;

	// Remove extraneous backslashes.
	$posts = $wpdb->get_results( "SELECT ID, post_title, post_content, post_excerpt, guid, post_date, post_name, post_status, post_author FROM $wpdb->posts" );
	if ( $posts ) {
		foreach ( $posts as $post ) {
			$post_content = addslashes( deslash( $post->post_content ) );
			$post_title   = addslashes( deslash( $post->post_title ) );
			$post_excerpt = addslashes( deslash( $post->post_excerpt ) );
			if ( empty( $post->guid ) ) {
				$guid = get_permalink( $post->ID );
			} else {
				$guid = $post->guid;
			}

			$wpdb->update( $wpdb->posts, compact( 'post_title', 'post_content', 'post_excerpt', 'guid' ), array( 'ID' => $post->ID ) );

		}
	}

	// Remove extraneous backslashes.
	$comments = $wpdb->get_results( "SELECT comment_ID, comment_author, comment_content FROM $wpdb->comments" );
	if ( $comments ) {
		foreach ( $comments as $comment ) {
			$comment_content = deslash( $comment->comment_content );
			$comment_author  = deslash( $comment->comment_author );

			$wpdb->update( $wpdb->comments, compact( 'comment_content', 'comment_author' ), array( 'comment_ID' => $comment->comment_ID ) );
		}
	}

	// Remove extraneous backslashes.
	$links = $wpdb->get_results( "SELECT link_id, link_name, link_description FROM $wpdb->links" );
	if ( $links ) {
		foreach ( $links as $link ) {
			$link_name        = deslash( $link->link_name );
			$link_description = deslash( $link->link_description );

			$wpdb->update( $wpdb->links, compact( 'link_name', 'link_description' ), array( 'link_id' => $link->link_id ) );
		}
	}

	$active_plugins = __get_option( 'active_plugins' );

	/*
	 * If plugins are not stored in an array, they're stored in the old
	 * newline separated format. Convert to new format.
	 */
	if ( ! is_array( $active_plugins ) ) {
		$active_plugins = explode( "\n", trim( $active_plugins ) );
		update_option( 'active_plugins', $active_plugins );
	}

	// Obsolete tables
	$wpdb->query( 'DROP TABLE IF EXISTS ' . $wpdb->prefix . 'optionvalues' );
	$wpdb->query( 'DROP TABLE IF EXISTS ' . $wpdb->prefix . 'optiontypes' );
	$wpdb->query( 'DROP TABLE IF EXISTS ' . $wpdb->prefix . 'optiongroups' );
	$wpdb->query( 'DROP TABLE IF EXISTS ' . $wpdb->prefix . 'optiongroup_options' );

	// Update comments table to use comment_type
	$wpdb->query( "UPDATE $wpdb->comments SET comment_type='trackback', comment_content = REPLACE(comment_content, '<trackback />', '') WHERE comment_content LIKE '<trackback />%'" );
	$wpdb->query( "UPDATE $wpdb->comments SET comment_type='pingback', comment_content = REPLACE(comment_content, '<pingback />', '') WHERE comment_content LIKE '<pingback />%'" );

	// Some versions have multiple duplicate option_name rows with the same values
	$options = $wpdb->get_results( "SELECT option_name, COUNT(option_name) AS dupes FROM `$wpdb->options` GROUP BY option_name" );
	foreach ( $options as $option ) {
		if ( 1 != $option->dupes ) { // Could this be done in the query?
			$limit    = $option->dupes - 1;
			$dupe_ids = $wpdb->get_col( $wpdb->prepare( "SELECT option_id FROM $wpdb->options WHERE option_name = %s LIMIT %d", $option->option_name, $limit ) );
			if ( $dupe_ids ) {
				$dupe_ids = join( $dupe_ids, ',' );
				$wpdb->query( "DELETE FROM $wpdb->options WHERE option_id IN ($dupe_ids)" );
			}
		}
	}

	make_site_theme();
}

/**
 * Execute changes made in WordPress 2.0.
 *
 * @ignore
 * @since 2.0.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 * @global int  $wp_current_db_version
 */
function upgrade_160() {
	global $wpdb, $wp_current_db_version;

	populate_roles_160();

	$users = $wpdb->get_results( "SELECT * FROM $wpdb->users" );
	foreach ( $users as $user ) :
		if ( ! empty( $user->user_firstname ) ) {
			update_user_meta( $user->ID, 'first_name', wp_slash( $user->user_firstname ) );
		}
		if ( ! empty( $user->user_lastname ) ) {
			update_user_meta( $user->ID, 'last_name', wp_slash( $user->user_lastname ) );
		}
		if ( ! empty( $user->user_nickname ) ) {
			update_user_meta( $user->ID, 'nickname', wp_slash( $user->user_nickname ) );
		}
		if ( ! empty( $user->user_level ) ) {
			update_user_meta( $user->ID, $wpdb->prefix . 'user_level', $user->user_level );
		}
		if ( ! empty( $user->user_icq ) ) {
			update_user_meta( $user->ID, 'icq', wp_slash( $user->user_icq ) );
		}
		if ( ! empty( $user->user_aim ) ) {
			update_user_meta( $user->ID, 'aim', wp_slash( $user->user_aim ) );