I backed up LSL to dvd with no problem. Rip the game to your xbox hdd then ftp it to your pc then open nero 6 and select dvd udf and under the second tab(not sure the name right now) click the box for XBOX video playback compatabilty then add the files to the session (ie move from right pane to left pane hdd to dvd etc) and click burn and in 5 - 10 minutes depending on burner you have a perfect copy and NO COASTERS.
I use this method for 99.952467% of my backups without a hitch.
Just use the correct media for your xbox. IMHO ritek G04 are the best and compatabile with all 3 dvd drives i have checked.
Hope this helps ya out...