Index: /trunk/Nebulous-Server/lib/Nebulous/Server/SQL.pm
===================================================================
--- /trunk/Nebulous-Server/lib/Nebulous/Server/SQL.pm	(revision 24608)
+++ /trunk/Nebulous-Server/lib/Nebulous/Server/SQL.pm	(revision 24609)
@@ -67,4 +67,5 @@
         WHERE parent_id = ?
             AND dirname = ?
+        LOCK IN SHARE MODE
     },
     new_directory       => qq{