I recently bought some Ritek Arita 4x DVD+R's. To back up DVDs I use DVDshrink then create and ISO using Roxio creator classic. Then burn the image to disc using DVD Builder. The problem I am having is when I select it to burn to disc and it asks me what speed.....I select 8x on my Plextor 708A and it starts to burn....it says selected burn speed 8x....actual burn speed 1x. Theres the problem and I'm trying to find out why it only burns at one time on 4x discs and 8x selected. Thanks for any help anyone can give.