Calendar Alarms appearing a week late

Hi,

One of our users is having a strange issue where her calendar alarms are appearing over a week late.

For example, today she received three alarms that were from calendar entries 6, 10 & 11 days ago. But the entries that are in for today were not triggered at all ?

We’ve tried replacing the database design & de-activating & re-acticvating alarms, but the issue still occurs. Has anyone seen anything like this or similar ?

Thanks

Nick