Django "SMTPServerDisconnected Connection unexpectedly closed"

1. Check mail server by "telnet servername port(25)"
2. Check IMAP server (e.g. deovecot)

Problem BIGINT in Jython

You must convert Python Long object to Java Long object before execute sql command.

Example: id = Long(data[0])
difficulty = utils.calc_sentence_diff(data[1])
cursor.execute(update_sql, (difficulty, id))

Problem with Flex HTTPService ObjectProxy

Flash player can't convert ObjectProxy to ArrayCollection if you have only 1 item in ObjectProxy.