maybe anyone with experience in this area:
I cannot burn DVD-R. The writing process either doesn't start at all or it breaks after a few hundred megabytes.
I used Princo 4x, Memorex 4x and Verbatim 4x, but none worked.
I tried both B3EC and B3HC firmwares.
DVD+R seems to work quite alright; I only have Verbatim at hand, so I cannot say anything about other brands.