I am running Windows XP with NTFS file system on my Hard Disk yet I am encountering 4 gig limit on my DVD burns. I am burning with a Lite-On LDW-811S external burner connected with USB 2.0 onto 2X 4.7gb DVD-R's. When I reduce the total burn size to less than 4 gigs everything works fine, but when I exceed 4 gigs I get an error message at the end of my burn that reads "could not perform end of disc-at-once." This occurs with both Nero and Sonic MyDVD. Has anyone heard of this limitation? Can this be bypassed?