Index: ms-settings.php
===================================================================
--- ms-settings.php	(revision 23736)
+++ ms-settings.php	(working copy)
@@ -74,6 +74,9 @@
 		$current_blog = wp_cache_get( 'current_blog_' . $domain . $path, 'site-options' );
 		if ( ! $current_blog ) {
 			$current_blog = get_blog_details( array( 'domain' => $domain, 'path' => $path ), false );
+			if ( ! $current_blog ) {
+				$current_blog = get_blog_details( array( 'domain' => $domain, 'path' => '/' ), false );
+			}
 			if ( $current_blog )
 				wp_cache_set( 'current_blog_' . $domain . $path, $current_blog, 'site-options' );
 		}