I did change media, from platinum+r to platinum+r printable. I also changed the ide cable with no positive result. I just both a spindle of Verbatim+r and guess what, problem solved. I just backuped three movies. I guess bad platinums. I still find it strange because I bought two spindles of 25. The first spindle of 25 I had no problems with, all good copies. The second spindel did allright to the 10th DVD, then it started to go wrong, the last 15 dvd all bad copies. I must say that I bought the platinums very cheap, online for about 9 euro for a spindle of 25.