Comment 44 for bug 1713615

The space is not the problem, as downloading another file from the same project, but in a different directory, 'cabextract', also fails intermittently:

$ /usr/lib/apt/apt-helper download-file http://downloads.sourceforge.net/corefonts/cabextract-0.6-1.src.rpm cabextract-0.6-1.src.rpm
Get:1 http://downloads.sourceforge.net/corefonts/cabextract-0.6-1.src.rpm [94.9 kB]
Fetched 94.9 kB in 2s (50.5 kB/s)

$ /usr/lib/apt/apt-helper download-file http://downloads.sourceforge.net/corefonts/cabextract-0.6-1.src.rpm cabextract-0.6-1.src.rpm
Err:1 http://downloads.sourceforge.net/corefonts/cabextract-0.6-1.src.rpm
  Redirection from https to 'http://downloads.sourceforge.net/mirrorproblem?failedmirror=liquidtelecom.dl.sourceforge.net' is forbidden [IP: 197.155.77.8 443]
E: Failed to fetch https://liquidtelecom.dl.sourceforge.net/project/corefonts/cabextract/0.6/cabextract-0.6-1.src.rpm Redirection from https to 'http://downloads.sourceforge.net/mirrorproblem?failedmirror=liquidtelecom.dl.sourceforge.net' is forbidden [IP: 197.155.77.8 443]
E: Download Failed