my friend 'casex' and i while using moodle noticed some interesting things...
1) you can login as guest even if you don't want to allow the guest user to login (try user: guest / passwd: guest)
2) with I.E. you can easily view the whole content of the calendar, click on the month name, click to hide global events and... magic, you can see the course events!
do you know how to fix it?