Nope. Did not show and did not spin the disc or any disc. Same happened with the previous drive. It just seems very strange that 2 drives in a row would have the same flaw.
ED

Does your drive have its own power supply or is it relying on the port's supply? However the enclosure is getting its power, it appears to be insufficient for the DVR-110. Like the DVR-109 series, this drive uses much more power than previous models. It's quite apparent the enclosure used isn't supplying quite enough…

This is great news, this means Apple supports 110D as Superdrive with 10.4.4 update?

On the other subject, I have 110D in external firewire case and last night my iMac G4 20" couldn' see it (Apple system Profiler said: Unknown device). Restart didn't help, but shut down and power up fixed it.

Not so much newfound support, but apparent acceptance of the consumer's desires to use the drive of their choice. The drive still appears as Unsupported rather than Apple Supported/Installed, but Apple's software will still accept it and use it. This does not mean that if you have problems, Apple will offer support.

The fault would have been in your Firewire bridge device (The drive's enclosure). Turning off, disconnecting followed by the reverse would restore the visibility of the drive.