After months of doing all sorts of loops of my Toast 17 [then Toast 18] always miscalculated filesize of my vids, I finally made the key discovery. Unlike Toast 14, 17 and now 18 will not burn vids bigger than 10GB. Under Toast 14 my vids of 11.35GB fitted in on both standard DVD-R and Blu-Ray with room to spare - See attached from a screenshot using 14. Roxio has yet to respond to my question: does Toast 17 able to burn vids bigger than 10GB? Can anyone else test that?