Question re: my Samsung Blu player scratching a DVD - anyone else had this happen?

[AnamorphicWidescreen]

Hey everyone. I know a lot of folks on here are more technically-savvy than I am - so I just wanted to run this past everyone, since someone may be able to provide some insight on this:

I got a new Samsung Blu player in late 2012, and everything has been going well - It's the first Blu player I've purchased, and I've overall been happy with this.

However, a problem came up recently that I had never experienced before: I played my Land of the Dead regular DVD for the first time on this player. The movie itself played fine, but after I watched the film I wanted to check out the bonus features. At one point while checking them out, I clicked the "Back" arrow to go to the previous page (there were two pages of bonus features), and the player started making this hellacious noise that I had never heard before. I then pressed "Stop" & went back to the main menu of the player (not the main menu of the Disc) - and then pressed Eject.

I then looked at the LOTD DVD itself, and there is now a perfect round scratched circle on the surface of the Disk itself, directly around the middle open circle on the DVD. I'm fairly certain this scratch wasn't there before, though to be honest am not 100% sure about this.

Note:

1) The DVD was placed in the player properly, since the movie itself played fine.

2) This type of thing has never happened before with this Blu player.

2) I subsequently played other DVD's on this same Samsung Blu player, and they worked fine.

In any case, I'm not planning on putting this LOTD DVD back in this Blu player; in fact, I'll probably try to recycle this DVD since I'm not comfortable playing it on any other player at this point.

However, I just wanted to see what others thought - does it sound like the problem was with the Blu player, or was the problem with the DVD itself?

Has anyone else ever had anything like this happen with their Blu players?

Thanks in advance for any info. on this!