Does anyone know where I can get a program that will check my
Superdrive to make sure it is working properly? The last several
DVD-R's I burned were very marginal - played ok on the superdrive and
a PC DVD-ROM drive, but bad stuttering on my dedicated DVD players. I
realize it could be a media issue, but want to check this first if
it's possible. Adding to my suspicions was a "diagnostic error" I got
from iDVD:

Errors were found during the burning process.
The recording device reported the hardware error:
Tracking servo failure. (0x09, 0x01.)

I have another Q as well if anyone can help:

I use my internal HD for iMovie and iDVD when editing, but would like
to move the projects to an external FW HD when I'm done. I had hoped
that I could then bring the projects up on the external HD, but that
appears not to work. There must be absolute file references somwhere,
as opposed to relative ones. Is this right? And, can I move the
projects to the external HD and then back to their original location
and use them OK?

Many thanks for any help you can provide.

Martin