Hey all, I just purchased the 520 and am loving it except for the problems it has with playing DVD-R's. It plays very few of them. Is anyone else having this problem? Is there a media that it "likes" more than others? Some of my Memorex ones work and the Panasonic does as well...but I'm trying to get one that works more often than not. I would love to keep on using this player for everything. Thanks!