Well, the thing is I did everything exactly the way I should and lost all my data from the disc just like that--- so I wondered whether it was really ex exception which will never happen again... or if something like this has ever happened to anybody. Sony, of course, says that it was en exception and it should - "should" - never happen again. If I am the only one in the world with a problem like this that happened only once, I will be fine with it, but if there should be more cases like that, I should be returning the unit... Thanks a lot for help.