This occurred while attempting to install postfx using the Synaptic package manager. After failure on installation I waited for about 20 minutes while it tried to fix the error then closed it when it appeared that all activity had ended. I then changed the package manager to uninstall it and ran it again during which it failed on above package.
DistroRelease: Ubuntu 11.04
Package: ecryptfs-utils 87-0ubuntu1.2
ProcVersionSignature: Ubuntu 2.6.38-11.50-generic 22.214.171.124
Uname: Linux 2.6.38-11-generic i686
Date: Sat Oct 8 15:25:57 2011
Removing ecryptfs-utils ...
ERROR: Cannot remove ecryptfs-utils, as it appears to be in use:
/home/jcor49/.Private on /home/jcor49 type ecryptfs (ecryptfs_check_dev_ruid,ecryptfs_cipher=aes,ecryptfs_key_bytes=16,ecryptfs_unlink_sigs,ecryptfs_sig=e71040948c7fa9b7,ecryptfs_fnek_sig=de32b6fda30ed269)
dpkg: error processing ecryptfs-utils (--remove):
subprocess installed pre-removal script returned error exit status 1
ErrorMessage: subprocess installed pre-removal script returned error exit status 1
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
Title: package ecryptfs-utils 87-0ubuntu1.2 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)