Comment 8 for bug 996379

/var/log/dist-upgrade/main.log

[...]
2012-05-07 23:30:21,679 DEBUG cache aufs_rw_dir: /tmp/
2012-05-07 23:30:21,679 DEBUG Free space on /: 1472831488
2012-05-07 23:30:21,679 DEBUG Dir /usr mounted on /
2012-05-07 23:30:21,679 DEBUG Dir /var mounted on /
2012-05-07 23:30:21,679 DEBUG Dir /boot mounted on /
2012-05-07 23:30:21,679 DEBUG Dir /var/cache/apt/archives mounted on /
2012-05-07 23:30:21,679 DEBUG Dir /tmp mounted on /
2012-05-07 23:30:21,679 DEBUG Dir /home mounted on /
2012-05-07 23:30:21,683 DEBUG Dir /tmp mounted on /
2012-05-07 23:30:21,683 DEBUG fs_free contains: '{'/var': <DistUpgradeCache.FreeSpace object at 0xa2d33ac>, '/tmp': <DistUpgradeCache.FreeSpace
2012-05-07 23:30:22,310 DEBUG linux-image-3.2.0-24-generic (new-install) added with 28219595 to boot space
2012-05-07 23:30:22,797 DEBUG dir '/var/cache/apt/archives' needs '975438014' of '<DistUpgradeCache.FreeSpace object at 0xa2d33ac>' (1472831488
2012-05-07 23:30:22,798 DEBUG dir '/usr' needs '378480640' of '<DistUpgradeCache.FreeSpace object at 0xa2d33ac>' (497393474.000000)
2012-05-07 23:30:22,798 DEBUG dir '/usr' needs '52428800' of '<DistUpgradeCache.FreeSpace object at 0xa2d33ac>' (118912834.000000)
2012-05-07 23:30:22,798 DEBUG dir '/boot' needs '28219595' of '<DistUpgradeCache.FreeSpace object at 0xa2d33ac>' (66484034.000000)
2012-05-07 23:30:22,798 DEBUG dir '/tmp' needs '5242880' of '<DistUpgradeCache.FreeSpace object at 0xa2d33ac>' (38264439.000000)
2012-05-07 23:30:22,798 DEBUG dir '/' needs '10485760' of '<DistUpgradeCache.FreeSpace object at 0xa2d33ac>' (33021559.000000)
2012-05-07 23:30:22,798 DEBUG dir '/tmp' needs '0.0' of '<DistUpgradeCache.FreeSpace object at 0xa2d33ac>' (22535799.000000)
2012-05-07 23:30:22,798 DEBUG dir '/usr' needs '0.0' of '<DistUpgradeCache.FreeSpace object at 0xa2d33ac>' (22535799.000000)
[...]
2012-05-08 00:06:13,174 ERROR got an error from dpkg for pkg: '/var/cache/apt/archives/ghc_7.4.1-1ubuntu2_i386.deb': 'failed in write on buffer
2012-05-08 00:06:13,558 DEBUG running apport_pkgfailure() ghc: failed in write on buffer copy for backend dpkg-deb during `./usr/lib/ghc/ghc-7.
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