I had this problem about a year ago. Of course it has reared its ugly head again. I am just checking to see if there is known problems:
Is anyone having problems with students submitting the workshop, no record of the submission? I have one student who claims to have submitted the answer in a timely manner. There is no evidence in the log that he attempted to "add" an answer. The log does show that he sucessfuly did other activity on moodle the same day. Other students successfully submitted an answers the same day. I think this is an isolated issue specific to this student, but I thought I would check just to make sure no oneelse is having similar issues and to make sure that this is not a program issue?