Although i don't have this drive i do have a lite-on 812s@832s (this means a lite-on 812s hacked to 832s, so it burns dual layer discs). Lite-ons and dvd-r's don't get along well, in fact it can be quite hard to get a decent burn to a dvd-r with a lite-on drive. After burning many datawrite dvd-r's myself (ritek g04 dye) i found that none of the burns were that good, testing them in my xbox showed this, as the burns of movies tended to be pixelated and would freeze etc. This was partially solved with a firmware update at
you'l see that there was new firmware released less than two weeks ago, this helps it to match more media types. To update the firmware (which by the way is when you update the software on the drive), download the new firmware and click on it, it will then update your drive so its more compatible with more media.
I solved this problem completely by using dvd+r's instead of -r's, and changing the booktype to dvd-rom (you can download a booktype changer on the lite-on site as well http://www.liteonit.com/ODD/English/e_downloads/e_utility.asp ), its the v1.3.3, this changes the way a dvd player sees the media, so instead of the dvd player thinking its a dvd+r, it actually thinks its a dvd-rom, this helps with compatibility, so gives better burns. I use ritek R02 media, also by datawrite now, and i get really good burns 99% of the time that even work on the picky xbox.