Bert, bert wrote: > Do you also know what CoW means? In all the articles I have not found where its short for. The link I gave you before mentions at the start what cows stand for. It stand for "copy on write" [page]'s. Some more info can be found here: http://en.wikipedia.org/wiki/Copy_on_write Hope that helps. Cheers, Daniel Hedlund daniel at digitree.org