johnMG: the main trouble with the dvd is when the media check works but the system won't install (distribution notes). The sha1sum check is usually reliable. It looks a bit like anacondas current mediacheck is being depreciated.
I read your fedora forum posts:
You had issues mostly with OS X messing up. You probably had a poor line connection somewhere too. It showed up with FC4 because there are 4 CDs and thus lots of chances to go wrong. Hence the "paranoid" feeling.
(I too have had issues with OS X and burning Cds. It was very unreliable for large files, but it wasn't my machine so I didn't want to fiddle. Sometimes it's just the hardware that comes with these things.)
I remember, a long time ago now, a flat mate telling me that floppy disks are not reliable. I was surprised and enquired further and he quoted a totally unreasonable failure rate (1 in 3 uses corrupts the disk or something). I investigated and discovered that a fridge magnet had got stuck under his drive. If the floppy jiggled a bit going in then it would be erased! And so he had an unreasonable paranoia about floppy integrety from personal experience. (I also had an experience where someon was repeatedly scratching one or another disk during the sneakernet transfer... this produced identical frustration to yours as you can imagine.)
Ultra-paranoid is probably safer - but not required.
For FC4 - I'd say: use the dvd, do a fresh install (no ungrade), and read the release notes first. It also helps not to be the first to try
If the disk-install works not, try a net install: then you aren't relying on the burn step working right.
I'd also recommend the
faq and the personal FC4 installation
here.
It looks like you did an "everything" install too - so you'll be finding FC4 a little bloated
I'm curious: is the rescue CD any different from CD1? I have the dvd and rescue but I cannot see any difference using the install notes.
I don't have a fast connection - fast internet in NZ sucks and from this island, forget it. I got mine through an internet cafe. They hadn't even heard of the sha1sum but the dvd install nicely with no error messages first time.