Thanks Andrea, I replaced the files in Sam's patch and the activities are now rendered like so:
"Completed","Tuesday, 24 April 2012, 12:10 PM",
This should avoid confusing our users. However, I still feel that it would make more sense to to store each activity in a single column, e.g.
"Completed: Tuesday, 24 April 2012, 12:10 PM",
I can customise the code to do this but I see little point unless others agree with me?
I also don't understand why the course completion reports lack column headers (email address, activity 1 title, activity 2 title, etc.) whereas the activity completion reports have them.
I am interested to see what other people think about these features.
-Sam