[Bug 1192514] [NEW] Invalid locale in /etc/default/locales halts boot

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Step to reproduce: 
1. Set invalid locale to /etc/default/locale by:
sudo update-locale LC_TIME=" cs_CZ.UTF-8"
(notice the blank between " and cs)
2. Reboot

What happens:
The boot hangs with messages (after pressing escape) about invalid locale

What should happen:
I guess some default locale should be used instead, not booting is not cool.

How to recover:
Boot in recovery mode, mount partition by selecting fsck, then drop to root console and edit /etc/default/locale with vim (delete the blank in C_TIME=" cs_CZ.UTF-8")

I am not sure if this is againsta the kernel or some other part of the boot process.
--- 
ApportVersion: 2.9.2-0ubuntu8.1
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  drew       1594 F.... pulseaudio
DistroRelease: Ubuntu 13.04
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-05-03 (46 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MachineType: LENOVO 20828VG
MarkForUpload: True
Package: linux (not installed)
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-25-generic root=UUID=8277281a-1fbc-4c61-8477-50dc9ec804cf ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.8.0-25.37-generic 3.8.13
RelatedPackageVersions:
 linux-restricted-modules-3.8.0-25-generic N/A
 linux-backports-modules-3.8.0-25-generic  N/A
 linux-firmware                            1.106
Tags:  raring
Uname: Linux 3.8.0-25-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
dmi.bios.date: 03/13/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7VET64WW (2.12 )
dmi.board.name: 20828VG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7VET64WW(2.12):bd03/13/2009:svnLENOVO:pn20828VG:pvrThinkPadT500:rvnLENOVO:rn20828VG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 20828VG
dmi.product.version: ThinkPad T500
dmi.sys.vendor: LENOVO

** Affects: mountall (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: apport-collected raring
-- 
Invalid locale in /etc/default/locales halts boot
https://bugs.launchpad.net/bugs/1192514
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