I get a lot avec notice in help.php when display the smileys list.
"Notice: Undefined offset: XX in help.php on line 144"
imho it's because of the loop in help.php that check if there are any duplicate image. When a dupe is removed, there is a free offset in the array.
For now, i've replaced line 144 (wich was :
if ($smiley_img[$i] == $smiley_img[$next])
) by :
if (isset($smiley_img[$next]) && $smiley_img[$i] == $smiley_img[$next])
and got no notice anymore.
I hope this cas help...