diff --git a/adminforce/content/usersystem/refschleifen.php b/adminforce/content/usersystem/refschleifen.php
new file mode 100644
index 0000000000000000000000000000000000000000..6d2290222338cdbc2f5967c1ae869491f80c08d7
--- /dev/null
+++ b/adminforce/content/usersystem/refschleifen.php
@@ -0,0 +1,22 @@
+<?php
+head ("RefSchleifen-Pr&uuml;fung");
+
+$sql1 = db_query ("SELECT uid,werber FROM vms_werberdaten");
+$i = 0;
+while ($row = mysql_fetch_object($sql1)) {
+    $sql2 = db_query ("SELECT * FROM vms_werberdaten WHERE uid = " . $row->werber . " AND werber=" . $row->uid);
+    if (mysql_num_rows ($sql2) >= 1) {
+        $i++;
+        echo 'F&uuml;r die UserId ' . $row->uid . ' existiert eine RefSchleife (Weber ' . $row->werber . ')!<br />';
+    }
+}
+
+if ($i == 0) {
+    echo 'Es sind keine RefSchleifen vorhanden!';
+}
+
+foot ();
+
+echo '<br />';
+
+?>
\ No newline at end of file
diff --git a/images/Thumbs.db b/images/Thumbs.db
deleted file mode 100644
index 5a05df49d08e8af7c55a3bc0f388138c9969086d..0000000000000000000000000000000000000000
Binary files a/images/Thumbs.db and /dev/null differ