I use Imgburn to burn DVDs, yet DVD players that I have skip spots when I play the DVDs. Why? They play fine in my computer. I don't use the Verbatim brand; it's Memorex. I burn Memorex at different speeds: like 2.1x, 6.0x, and etc., but my players still skip spots no matter what speed I used. I don't know how to solve this problem. Please help.