K3B DVD burn and md5sum

[John Mahowald]

Since the iso checked out I assume something happened during the burn
process, especially since since both the media check and a direct
md5sum of the disc don't match the expected.

md5sums do fail on even a few different bytes. Usually buffer
underruns are detectable when burning, so that probably isn't it. It's
possible that no package you installed used those corrupted bytes. Or
it could be that some file you installed is corrupted.

Maybe verify all your rpm packages with "rpm -Vva". It'll take a while
but should check much of what you installed.