On this website http://www.weedram.be/joomla/ Bert Bruyneel publishes his whisky diary. It's written in Dutch, so I will try to translate an interresting story Bert published yesterday.
This is what the label from the 1965 Ardbeg 40YO tells us:
Ardbeg distilled 1965, a very rare vatting of Islay Single Malt Whisky drawn from two exceptionally old Ardbeg casks, nrs 3678 and 3679. Bottled at cask strength in 2005 and non-chillfiltered for maximum flavour
In august 2004 Bert worked for a week at Ardbeg. Earlier this week he checked the pictures he's got from that week. Amongst those pictures was one on which bert found himself with those 2 cask which where already empty at the time (august 2004!!!)
To view the picture choose the next link: http://www.weedram.be/blog/Bert/
A bit strange I think. Perhaps somebody knows more about this.