package initramfs-tools 0.98.8ubuntu3 failed to install/upgrade: il sottoprocesso vecchio script di post-installation ha restituito lo stato di errore 1

[Adriano Pallavicino]

Got this error after apt-get update && apt-get upgrade. Starting point is Natty prebuild image netbook edition

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: initramfs-tools 0.98.8ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-1208.11-omap4 2.6.38.2
Uname: Linux 2.6.38-1208-omap4 armv7l
Architecture: armel
Date: Mon Jun 27 12:35:53 2011
ErrorMessage: il sottoprocesso vecchio script di post-installation ha restituito lo stato di errore 1
PackageArchitecture: all
SourcePackage: initramfs-tools
Title: package initramfs-tools 0.98.8ubuntu3 failed to install/upgrade: il sottoprocesso vecchio script di post-installation ha restituito lo stato di errore 1
UpgradeStatus: No upgrade log present (probably fresh install)

[maximilian attems (maks-debian)]

Generating u-boot configuration from /boot/boot.script... done.
umount: /tmp/tmp.jFUISZoqC2: device is busy.
        (In some cases useful info about processes that use
         the device is found by lsof(8) or fuser(1))

seems to be an "easy to hit" error.