Hello. I was just trying to burn a dual-layer DVD with Toast Titanium 8 and for 4 different dual-layer DVDs it reported a hardware error. One of the times it says "Focus servo failure" and the other times it just mentioned an error code with crazy arbitrary numbers. However, I'm burning a normal single-layer DVD right now without any problems. It did sound a little off when it was preparing to burn the dual-layer dvd. It kind of sounded like it was almost having trouble, but not quite. It just sounded off. The single-layer DVD was Imation, while the dual-layer ones are Memorex. I've had varying issues with both, but most of the time they seem fine. So my question is... does the burner use a separate laser (or separate anything) when it comes to dual-layer? Could it be, should that be the case, that something got damaged somehow? I have one more month left in the 1 year warranty on my MacBook Pro, so I'll probably take it in to have a test at the Apple Store. Has anyone else experienced this? I remember a while ago it kind of did the same thing. It would error when trying to burn a dual-layer DVD, but after a while it burned it. I'll try it again soon. Also... what is a good bit-rate for the video and audio for DVD players? It seems like whenever I burn a DVD to watch on the TV, the audio gets out of sync after a while. I've tried MovieGate and FFMpegX. With FFMpegX, I usually don't change the bitrate. It was fine a couple of times, but sometimes it gets screwed up (usually audio out of sync). With MovieGate, I change the bitrate to accommodate more files on the disc. Anyway... any ideas?