I just bought a 32¨Thomson 50hz instead, works like a charm
A few notes to those who have the same problem with Samsung TV:s
-Try using svhs instead
-Tune contrast and brightness down a bit, then the lines becomes a little less (but for me, still disturbing) visible
-If you can live with the downsides of the Digital Noise Reduction or whatever its called, turn it on. That made the lines go away a bit, but I dont like the smearing effects
-Return TV and buy a different brand :-)