Follow-up; unfortunately it didn’t work out as well as I had hoped.

It seems that Firefox is limited to files under 2GB; at least it misreported the file size, which should be 2314MB, as 2097MB, and cut off the download at that point, with the final 200-odd megabytes missing. It also doesn’t support resuming downloads after quitting the application.

Several other tricks I tried to resume the download, or to download from the command line, also didn’t work. So I reported the issue to Apple DTS… let’s hope the actual DVD arrives sometime soon. It usually takes 2-3 weeks. icon_sad.gif