Almost everytime when I play a dvd-r disc in my Lg 6194 I get a very high frequensed sound after about one hour from the dvdplayer. The movie plays along just fine but with the sound there until you turn the player off or eject the dvd. This never happens on dvds that I bought just on dvd-r.. haven't tested dvd+r because I have a dvd-r-only burner (pioneer 105).
And sometimes the movies get all blocky and then after 10 seconds stops and when trying to resume play all you get is a black screen and that high frequensed sound.

I don't think it's a problem with the burner/media because all of them works just fine at a friend and in my other dvdplayer pioneer ns-dv55.
Should I take it back to the store where I bought it or but a lens cleaner or what do you guys think?

//mattias