Index: wp-includes/ms-admin-bar.php
===================================================================
--- wp-includes/ms-admin-bar.php	(revision 16710)
+++ wp-includes/ms-admin-bar.php	(working copy)
@@ -33,15 +33,17 @@
 			$current_blog->domain
 		);
 
-	$mature_url = network_admin_url( "edit.php?action=confirm&action2={$matureaction}&id={$current_blog->blog_id}&msg=" . urlencode( $maturetext_confirm ) );
-	$suspend_url = network_admin_url( "edit.php?action=confirm&action2={$suspendaction}&id={$current_blog->blog_id}&msg=" . urlencode( $suspendtext_confirm ) );
+	$mature_url = wp_nonce_url( network_admin_url( "edit.php?action=confirm&action2={$matureaction}&id={$current_blog->blog_id}&msg=" . urlencode( $maturetext_confirm ) ), 'confirm' );
+	$suspend_url = wp_nonce_url( network_admin_url( "edit.php?action=confirm&action2={$suspendaction}&id={$current_blog->blog_id}&msg=" . urlencode( $suspendtext_confirm ) ), 'confirm' );
 
 	/* Add the submenu items to the Super Admin menu */
 	$wp_admin_bar->add_menu( array( 'parent' => 'superadmin', 'title' => __( 'Network Admin' ), 'href' => network_admin_url(), 'position' => 5, ) );
 	$wp_admin_bar->add_menu( array( 'parent' => 'superadmin', 'title' => __( 'Site Admin' ), 'href' => admin_url(), 'position' => 10, ) );
 	$wp_admin_bar->add_menu( array( 'parent' => 'superadmin', 'title' => __( 'Site Options' ), 'href' => network_admin_url( "site-info.php?id={$current_blog->blog_id}" ), 'position' => 30, ) );
 	$wp_admin_bar->add_menu( array( 'parent' => 'superadmin', 'title' => ( $current_blog->mature ? __('Unmark as mature') : __('Mark as mature') ), 'href' => $mature_url, 'position' => 50, ) );
-	$wp_admin_bar->add_menu( array( 'parent' => 'superadmin', 'title' => ( $current_blog->spam ? __('Unsuspend site') : __('Suspend site') ), 'href' => $suspend_url, 'position' => 80, ) );
+
+	if ( ! is_main_site( $current_blog->blog_id ) )
+		$wp_admin_bar->add_menu( array( 'parent' => 'superadmin', 'title' => ( $current_blog->spam ? __('Unsuspend site') : __('Suspend site') ), 'href' => $suspend_url, 'position' => 80, ) );
 }
 
 ?>