It seems like there was some problem with the email server during the weekend. I had not got any email for about two days and then all of sudden my inbox was filled with emails this morning. Judging by these emails, it seems more are missing, so if you emailed me during the weekend but didn't get any reply, please resend the email. If the email was a late homework submission, please forward the original email (which should be in your "Sent" box) so it has the original timestamp.