I am not 100% sure if this is Espionage related.
I have used the ICal template. ICal (and other related apps) were not running during the encryption. After encryption i opened Ical, entered the password and all entries under "On My Mac" were doubled.
If i delete the double entries and reopen ICal the doubled entries reappear.
I emptied the trash, with no effect.
It could be a problem with icalviewer (http://www.icalviewer.com/), which i forgot to close during the encryption process.
Is there a way to figure out what data files ICal is using and delete the doubled ones?