errors upgrading

[Alexandru Cabuz <alexcabuz@gmail.com>]

Hello,

Here's an example of the kind of error I've been getting trying to run
apt-get upgrade on my amd64 system.

Réception de : 23 ftp://ftp.de.debian.org sid/main libsane 1.0.15-3 [2634kB]
Err ftp://ftp.de.debian.org sid/main libsane 1.0.15-3
  Unable to fetch file, server said
'/debian-amd64/pure64/pool/unstable/main/amd64/s/sane-backends/libsane_1.0.15-3_amd64.deb:
No such file or directory  '

I'm getting about a dozen of these and that's not counting the
base-config, sed and a couple of other packages which have been broken
for a while now and so I have them on hold for the time being.

I've never seen this before. What's going on?

Alex.