Public Calendar View

I recently was able to go to one of the shared calendar entries in our public folder on our Exchange 2003 and see items that others have posted (for instance, our employee vacation calendar). I can open this particular calendar item, but I do not see any entries posted anymore.

I checked the permission and I currently have editor permissions. Other people have no problem seeing the entries.

Is there anything else I should check or does this sound like a corrupted user account?