No Arabic l10n after updating to Firefox 18

[Khaled Hosny]

After updating to Firefox 18 the Arabic l10n is lost and English UI is used instead. After checking I found it was caused by presence of empty lines on top of the install.rdf file of the Arabic xpi. After manually editing the file and removing the empty line, Arabic l10n is back again.

This have been reported upstream as well, but I think it deserves a fix in Ubuntu until it is fixed there.
https://bugzilla.mozilla.org/show_bug.cgi?id=828151

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: firefox-locale-ar 18.0+build1-0ubuntu0.12.04.3
ProcVersionSignature: Ubuntu 3.2.0-34.53-generic-pae 3.2.33
Uname: Linux 3.2.0-34-generic-pae i686
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: i386
ArecordDevices:
 **** قائمة أجهزة العتاد الـCAPTURE ****
 card 0: PCH [HDA Intel PCH], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: khaled 5979 F.... pulseaudio
 /dev/snd/controlC0: khaled 5979 F.... pulseaudio
BuildID: 20130107224926
Card0.Amixer.info:
 Card hw:0 'PCH'/'HDA Intel PCH at 0xf7b00000 irq 59'
   Mixer name : 'IDT 92HD87B1/3'
   Components : 'HDA:111d76d1,102804b0,00100205'
   Controls : 17
   Simple ctrls : 10
Card1.Amixer.info:
 Card hw:1 'NVidia'/'HDA NVidia at 0xf6080000 irq 17'
   Mixer name : 'Nvidia GPU 14 HDMI/DP'
   Components : 'HDA:10de0014,10de0101,00100100'
   Controls : 24
   Simple ctrls : 4
Channel: Unavailable
Date: Sat Jan 12 22:11:53 2013
Dependencies:

ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
IpRoute:
 default via 192.168.1.1 dev wlan0 proto static
 169.254.0.0/16 dev wlan0 scope link metric 1000
 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.2 metric 2
MarkForUpload: True
MostRecentCrashID: bp-80fafece-748c-4b2f-80b9-80fba2120810
PrefSources:
 prefs.js
 [Profile]/extensions/{3e0e7d2a-070f-4a47-b019-91fe5385ba79}/defaults/preferences/defaults.js
Profiles: Profile0 (Default) - LastVersion=18.0/20130107224926 (In use)
RelatedPackageVersions:
 adobe-flashplugin 11.2.202.261-0precise1
 icedtea-6-plugin 1.2-2ubuntu1.3
 totem-mozilla 3.0.1-0ubuntu21.1
 gnome-shell 3.4.1-0ubuntu2
RunningIncompatibleAddons: False
SourcePackage: firefox
SubmittedCrashIDs:
 bp-80fafece-748c-4b2f-80b9-80fba2120810
 bp-304879e7-6045-41ca-8dfc-2c7202120619
 bp-f86ce67b-a3f8-41a3-af94-e05e52120105
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/22/2012
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A10
dmi.board.name: 0HVRTT
dmi.board.vendor: Dell Inc.
dmi.board.version: A10
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvrA10:bd03/22/2012:svnDellInc.:pnInspironN5110:pvrNotSpecified:rvnDellInc.:rn0HVRTT:rvrA10:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Inspiron N5110
dmi.product.version: Not Specified
dmi.sys.vendor: Dell Inc.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.