1) Boot into OS 9, and copy VIDEO_TS folder to hard drive
2) Boot back into OS X, Open up Toast, and select the DVD burning option
3) Create a new DVD and name it whatever you want.
4) Drag VIDEO_TS folder into DVD and burn it.
Or if you have Toast in OS 9, you could just do the above there.
It's an OS X.2 permissions issue. Ironically, these discs reportedly work fine in X.1.
[EDIT] (macbarry, I didn't know you had an OS X-only machine.)
I posted this in the other thread, but here it is again:
Burning thru ethernet would be a bad idea I think. Too much chance for a buffer underrun, although theoretically it could be done. However, what you could do is copy the VIDEO_TS folder over via ethernet (or Firewire target mode), and then burn.
The other option is accessing the root account, but it doesn't seem to solve all problems as easily as just using OS 9. Maybe you can try with the root account, but personally I don't like fiddling too much in there.