think this will fix it

diff --git a/include/items.php b/include/items.php
index 5d9c36d94f1120b8befcfb71472051503b59a6d6..6f2e19f6a7dc08c2bfc98f34548beffc4dc40011 100755 (executable)
--- a/include/items.php
+++ b/include/items.php
@@ -3395,6 +3395,7 @@ function drop_item($id,$interactive = true) {
 function first_post_date($uid,$wall = false) {
        $r = q("select id, created from item 
                where uid = %d and wall = %d and deleted = 0 and visible = 1 AND moderated = 0 
+               and id = parent
                order by created asc limit 1",
                intval($uid),
                intval($wall ? 1 : 0)