hi, its been two years since i brought my samsung ts-h552b dvd writer till now it worked with no problem i burned countless dvd`s but it has started to irritate me iam unable to burn dvd`s completely but i can burn cd`s perfectly,during burning of dvd`s approx at40% or 80% i get some wierd errors like session fixation error,buffer underrun error etc what to do i tried burning various media mu burner is able to write cheap medium sucessfully especially dvd-r but not standard medium like sony(gives error at 40% or 80%)help me and also i have latest firmware flashed into it whats my burner`s problem is its life over should i buy a new one or its due to my hdd that buffer does not match what might be the reason plz help me out of these ...................thanx in advance