what application are you using to burn to . Nero, Roxio, Sonic MyDVD.
Many of us are using 411s and 811s and are not having problems.
I personally have both drives with lastest F/w and am using
Nero 126.96.36.199 and DVD shrink 3.0 B5
Media I am using are BeAll 4X +R & -R, Ritek 04 4X -R, Ricoh 4X +R & +RW. Memerox 4X +R.
Sure I have made Coaster but the were my fault.
Key important things to remember in burning DVD video.
what media am I using(cheap media give you bad burns usually),
What firmware am I using( new f/w give you more media compatiblity and better burrn results)
What software am I using (Some software version are buggy and will give you bad burns, some if you are using a illegal key will give you bad burns on purpose)
Is your computer setup properly. is your DVD and Hard drive on same IDE controller. If it is, that is not good. Always have the DVD data that you are burning on a different IDE controller then the DVD burner.I.E. Hard drive is usually on IDE1 as master and DVD burner on IDE2 as Master or slave. Never Hard drive on IDE1 as master and DVD Burner on IDE1 as slave.
Is DMA enabled or do you have the most current IDE controller drivers for your system.
This is just a small list of what is needed and if you don’t could cause you to have bad burns regardless of what brand DVD burner you have.