apt-get update fails on tools-exec-15:
root@tools-exec-15:~# apt-get update Ign file: Release.gpg Ign file: Release OK http://apt.wikimedia.org precise-wikimedia Release.gpg OK http://apt.wikimedia.org precise-wikimedia Release OK http://ftp.osuosl.org precise Release.gpg Ign file: Translation-de_DE Ign file: Translation-de Ign file: Translation-en OK http://apt.wikimedia.org precise-wikimedia/main Sources OK http://apt.wikimedia.org precise-wikimedia/universe Sources OK http://ftp.osuosl.org precise Release OK http://apt.wikimedia.org precise-wikimedia/thirdparty Sources OK http://apt.wikimedia.org precise-wikimedia/main amd64 Packages OK http://apt.wikimedia.org precise-wikimedia/universe amd64 Packages OK http://apt.wikimedia.org precise-wikimedia/thirdparty amd64 Packages OK http://apt.wikimedia.org precise-wikimedia/main i386 Packages OK http://apt.wikimedia.org precise-wikimedia/universe i386 Packages OK http://apt.wikimedia.org precise-wikimedia/thirdparty i386 Packages Ign http://apt.wikimedia.org precise-wikimedia/main TranslationIndex Ign http://apt.wikimedia.org precise-wikimedia/thirdparty TranslationIndex Ign http://apt.wikimedia.org precise-wikimedia/universe TranslationIndex OK http://nova.clouds.archive.ubuntu.com precise Release.gpg Hole:1 http://security.ubuntu.com precise-security Release.gpg [198 B] OK http://ftp.osuosl.org precise/main amd64 Packages Hole:2 http://nova.clouds.archive.ubuntu.com precise-updates Release.gpg [198 B] OK http://ftp.osuosl.org precise/main i386 Packages Ign http://ftp.osuosl.org precise/main TranslationIndex Hole:3 http://security.ubuntu.com precise-security Release [53,0 kB] OK http://nova.clouds.archive.ubuntu.com precise Release Hole:4 http://nova.clouds.archive.ubuntu.com precise-updates Release [194 kB] Hole:5 http://security.ubuntu.com precise-security/main Sources [124 kB] Ign http://apt.wikimedia.org precise-wikimedia/main Translation-de_DE Ign http://apt.wikimedia.org precise-wikimedia/main Translation-de Hole:6 http://security.ubuntu.com precise-security/universe Sources [33,8 kB] Ign http://apt.wikimedia.org precise-wikimedia/main Translation-en OK http://nova.clouds.archive.ubuntu.com precise/main Sources Hole:7 http://security.ubuntu.com precise-security/main amd64 Packages [487 kB] OK http://nova.clouds.archive.ubuntu.com precise/universe Sources Ign http://apt.wikimedia.org precise-wikimedia/thirdparty Translation-de_DE Ign http://apt.wikimedia.org precise-wikimedia/thirdparty Translation-de Ign http://apt.wikimedia.org precise-wikimedia/thirdparty Translation-en Ign http://apt.wikimedia.org precise-wikimedia/universe Translation-de_DE Ign http://apt.wikimedia.org precise-wikimedia/universe Translation-de Ign http://apt.wikimedia.org precise-wikimedia/universe Translation-en Ign http://ftp.osuosl.org precise/main Translation-de_DE OK http://nova.clouds.archive.ubuntu.com precise/main amd64 Packages Ign http://ftp.osuosl.org precise/main Translation-de Ign http://ftp.osuosl.org precise/main Translation-en OK http://nova.clouds.archive.ubuntu.com precise/universe amd64 Packages Hole:8 http://security.ubuntu.com precise-security/universe amd64 Packages [107 kB] OK http://nova.clouds.archive.ubuntu.com precise/main i386 Packages Hole:9 http://security.ubuntu.com precise-security/main i386 Packages [527 kB] OK http://nova.clouds.archive.ubuntu.com precise/main TranslationIndex OK http://nova.clouds.archive.ubuntu.com precise/universe TranslationIndex Hole:10 http://nova.clouds.archive.ubuntu.com precise-updates/main Sources [486 kB] Hole:11 http://security.ubuntu.com precise-security/universe i386 Packages [114 kB] OK http://security.ubuntu.com precise-security/main TranslationIndex Hole:12 http://nova.clouds.archive.ubuntu.com precise-updates/universe Sources [112 kB] OK http://security.ubuntu.com precise-security/universe TranslationIndex OK http://security.ubuntu.com precise-security/main Translation-en Hole:13 http://nova.clouds.archive.ubuntu.com precise-updates/main amd64 Packages [879 kB] OK http://security.ubuntu.com precise-security/universe Translation-en Hole:14 http://nova.clouds.archive.ubuntu.com precise-updates/universe amd64 Packages [254 kB] Hole:15 http://nova.clouds.archive.ubuntu.com precise-updates/main i386 Packages [915 kB] Hole:16 http://nova.clouds.archive.ubuntu.com precise-updates/universe i386 Packages [262 kB] OK http://nova.clouds.archive.ubuntu.com precise-updates/main TranslationIndex OK http://nova.clouds.archive.ubuntu.com precise-updates/universe TranslationIndex OK http://nova.clouds.archive.ubuntu.com precise/main Translation-de OK http://nova.clouds.archive.ubuntu.com precise/main Translation-en OK http://nova.clouds.archive.ubuntu.com precise/universe Translation-de OK http://nova.clouds.archive.ubuntu.com precise/universe Translation-en OK http://nova.clouds.archive.ubuntu.com precise-updates/main Translation-de OK http://nova.clouds.archive.ubuntu.com precise-updates/main Translation-en OK http://nova.clouds.archive.ubuntu.com precise-updates/universe Translation-de OK http://nova.clouds.archive.ubuntu.com precise-updates/universe Translation-en Fehl http://nova.clouds.archive.ubuntu.com precise/universe i386 Packages 404 Not Found [IP: 91.189.91.24 80] Es wurden 4.548 kB in 2 s geholt (1.565 kB/s) W: Fehlschlag beim Holen von http://nova.clouds.archive.ubuntu.com/ubuntu/dists/precise/universe/binary-i386/Packages 404 Not Found [IP: 91.189.91.24 80] E: Einige Indexdateien konnten nicht heruntergeladen werden. Sie wurden ignoriert oder alte an ihrer Stelle benutzt. root@tools-exec-15:~#
I compared /etc/apt/sources.list* on tools-login (where apt-get update succeeds) and tools-exec-15 and they are identical.
I think some apt cache must be purged, but I don't know enough about Debian to do that with confidence :-).
(This causes Puppet to stale; cf. T92239).