Well, not all CDs, but after 2 years,my DV-C503 has become quite picky. For a growing numbner of CDs, it will attempt to read the disc (display says LOADING) and then stop and the tray will open. Sometimes it will read a disc just fine, but not read it the next time it comes around when I'm playing 5-disc random. It's a big pain since I like to load up discs and put them on random when I'm working around the house. Has anyone else had similar problems or know what I might try to fix it? I've tried cleaning the laser with one of those CD cleaners with the little bush on it (Maxell) but it didn't seem to help.