Happens to me too. My home dir is also encrypted. I ran the command from /home/username like normal. Didn't unmount anything.
** Changed in: apt (Ubuntu) Status: Invalid => Confirmed -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/771780 Title: aptitude stopped before finishing of update - (unreachable)/SomEdIrEcToRy/ -= (unmounted) =- Status in “apt” package in Ubuntu: Confirmed Bug description: Binary package hint: aptitude When i was in a console in some "tmp" directory on some mounted mass storage drive (not in /tmp) I ran update of packages lists with "sudo aptitude update", but on the end I've recieved error mesage: E: Unable to change to (unreachable)/tmp/ - chdir (2: No such file or directory) E: Couldn't clean out list directories After few minutes I've found out that "Unfortunately" was the external drive teared out. After remounting the external drive was the repeated this command success full and the error has no more occurred. ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: aptitude 0.6.3-3.2ubuntu1 ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2 Uname: Linux 2.6.38-8-generic i686 Architecture: i386 Date: Wed Apr 27 03:56:54 2011 InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110413) ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 LANGUAGE=en_US:en SHELL=/bin/bash SourcePackage: aptitude UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/771780/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp