Why does PHP 5.3.10 (fcgi) choke on this line?
<? echo $dadosboleto["ponto_venda"]." <img src='imagens/b.png' width=10 height=1> ".$tmp2?>
Your code starts with <?, for that to work, you need short_tag_open set to 1. Otherwise, you need to use <?php.
not saying that this would be the solution - since indeed there could be other code involved.. but first of all I would rather prefer one of either a-bit-cleaner ways of writing that line of code:
1) <?PHP echo($dadosboleto['ponto_venda']." <img src='imagens/b.png' width='10' height='1'> ".$tmp2); ?>
2) <?PHP echo($dadosboleto['ponto_venda']); ?>> <img src='imagens/b.png' width='10' height='1'> <?PHP echo($tmp2); ?>
..hope this points in some direction..
ps: and be careful with double (") and single (') not getting mixed up