We are running Moodle 1.4 beta (we had some problems with 1.3).
We have a fairly simple setup with three active courses but have almost 200 hundred students enrolled.
We have set them some assignments but I have made these hidden (using the winking eye icon) on the course screen. When I am logged in (as an admin) I see them greyed out. When I log in as a student, I cannot see these at all (as I expected) .
However, when I reviewed the activity logs, one of the students has been able to see all of the hidden assignments and resources. When I log in as this student, they are still hidden and I cannot see them.
I am unsure how this could have happened - is this a known problem?