Index: acp_main.php
===================================================================
--- acp_main.php	(revision 1527)
+++ acp_main.php	(working copy)
@@ -186,11 +186,24 @@
 
 						// Resync post counts
 						$start = 0;
+						$max_post_id = 0;
+						
+						// Find the maximum post ID, we can only stop the cycle when we've reached it
+						$result = $db->sql_query('SELECT MAX(forum_last_post_id) as max_post_id FROM ' . FORUMS_TABLE);
+						if ($row = $db->sql_fetchrow($result)) 
+						{
+							$max_post_id = $row['max_post_id']; 
+						}
+						else 
+						{
+							add_log('critical', 'LOG_NO_MAX_POST'); // TODO: Add variable to lang file.
+						}
+												
 						$step = ($config['num_posts']) ? (max((int) ($config['num_posts'] / 5), 20000)) : 20000;
 
 						$db->sql_query('UPDATE ' . USERS_TABLE . ' SET user_posts = 0');
 
-						do
+						while ($start < $max_post_id)
 						{
 							$sql = 'SELECT COUNT(post_id) AS num_posts, poster_id
 								FROM ' . POSTS_TABLE . '
@@ -210,13 +223,8 @@
 
 								$start += $step;
 							}
-							else
-							{
-								$start = 0;
-							}
 							$db->sql_freeresult($result);
 						}
-						while ($start);
 
 						add_log('admin', 'LOG_RESYNC_POSTCOUNTS');