haha.... it is like my CS professor. We had to submit our programming assignments before midnight, and if it was more than a minute late, we would get a 0. Needless to say that 90% of people waited until last minute to submit, and his little server will crash often (and you would hear screams from students not being able to submit). Programmers are some of the bigest procrastinators, ever.
So, he decided to give 4 points bonus if somebody submited at least 24hrs before. That actually worked, as more people started submiting earlier. So, pg, maybe you need to give some incentives, or at least look at earlier sumissions more favoribly.