Ian Smith's post "Something I said..." has helped me through this utterly frustrating afternoon. Luckily I did take a few hours break while I thought the video was saving... and caught some sunshine, sushi and a latte while watching passersby wheel their groceries across the parking lot... such a waste of time - killing time while Snapz is not saving my vid and having to wheel groceries across parking lots. Looking at alternatives now and really clearing the disks. I have HDs on the Mac Pro and this should NOT have happened. Alas, it did. So I will keep the main HD really clear in future. I do feel better after reading Ian's post.. yes, it was nothing I said.. just did.