First of all apologies for the late response. No excuses, we missed your post.
I have checked with IT Services and there was a technical problem on Monday and Tuesday this week which prevented confirmation emails being sent out. It also preented me getting an email about your post to this Help Forum.
From what you say in your message it appears that you successfully submitted.
I've checked on ZZ601 and you successully uploaded an assignment onTuesday, 18 December 2012, 08:35 PM. If there's another submission on a different module and you want me to double check for you, please let me have the module code.
Have a peaceful and enjoyable Christmas and good luck with your studies next semester.
Head of e-Learning.