Hey,
Obviously I made a full backup
As I told yesterday, today I've done another upgrade, this time from 3.1.2 to 4.0.2. The issue happened too..
Only clicking on refresh in calendar shows the upcoming or overdue event that should be shown when the user logins.... This is a bug certainly.. I don't see no one complain in forum about this, maybe be this is a debian based bug?? I only use debian systems.. Of course, I restored the backup, somebody would kill me monday if they checked they would have no more automatic alerts when login to zimbra webui...