Sounds like these:
http://doc.pfsense.org/index.php/Logs_show_%22blocked%22_for_traffic_from_a_legitimate_connection,_why%3F
As Briantist proposed, those are very likely to be unrelated to the port forward not working. If it was, they'd be TCP:S, and no others.
The OP may need to try to track down what is going on as described here:
http://doc.pfsense.org/index.php/Port_Forward_Troubleshooting
Or it's also covered in the book.