A second, minor problem: the bounding box in this case is unnecessary big.
What system are you running on?
Oh sorry, I used Win XP SP 2.
>> What do you get when you run dot -V?
dot - Graphviz version 2.20.3 (Wed Oct 8 06:02:12 UTC 2008)
>> Also, the input file you provided didn't have any line "ordering = >> out". I assume this line was just >> in the graph attribute section?
Yes, I send you the wrong file.