How long after you start the command ? Basically the kernel has
discovered that the command in question took longer than the timeout
cdrecord told it to allow. It is then trying to get the system back.
> and after some time it hard freezes, nothing responds, i can't switch numlock
> off and i can't change to console (i am in XWindow).
Can you see what occurs if you are not in X windows as that might
display an oops or other information of use.
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