[Boofo]

Sometimes when I click on the last title on the forum home I get the dreaded no thread specified error. I have narrowed it down to this piece of code (which is an addon to this hack posted by PPN elsewhere in this thread).

PHP Code:

// goto newest thread
if ($goto=="newthread") {
  if (isset($forumid) and $forumid!=0) {
    $foruminfo=verifyid("forum",$forumid,1,1);
    $forumid=$foruminfo['forumid'];
    $lastthread=$DB_site->query_first("SELECT threadid FROM post WHERE username='".addslashes($foruminfo[lastposter])."' AND dateline='$foruminfo[lastpost]'");
//    $lastthread=$DB_site->fetch_array($DB_site->query("SELECT threadid FROM post WHERE username='".addslashes($foruminfo[lastposter])."' AND dateline='$foruminfo[lastpost]'"));
    header("Location: showthread.php?s=$session[sessionhash]&threadid=$lastthread[threadid]");
    exit;
  }
} 


and here is the line to replace in the "forumhome_lastpostby" template:

<a href="showthread.php?s=$session[sessionhash]&goto=newthread&forumid=$forum[forumid]" title="Go to first post">$forum[lastthread]</a>

Can anyone please tell me why the threadid will not update at times? If I go into the Admin CP and use the update counters, then it works fine.