Ubuntu Styling of Firefox is Now Missing After Partial Upgrade Today

[Lonnie Lee Best]

After doing a partial upgrade today, in Ubuntu 14.04, Firefox has lost its normal look/theme/style.

See this screenshot:
http://neartalk.com/ss/2014-02-17_17%3A36%3A42_932x852.png

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: firefox 25.0+build3-0ubuntu0.13.10.1
ProcVersionSignature: Ubuntu 3.13.0-8.28-generic 3.13.2
Uname: Linux 3.13.0-8-generic x86_64
NonfreeKernelModules: wl
AddonCompatCheckDisabled: False
ApportVersion: 2.13.2-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: lonnie 2659 F.... pulseaudio
BuildID: 20131028112446
Channel: Unavailable
CurrentDesktop: Unity
Date: Mon Feb 17 17:33:05 2014
ForcedLayersAccel: False
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2014-02-02 (15 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140202)
IpRoute:
 default via 192.168.0.254 dev wlan0 proto static
 192.168.0.0/24 dev wlan0 proto kernel scope link src 192.168.0.133 metric 9
 192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
PrefSources: prefs.js
Profiles: Profile0 (Default) - LastVersion=25.0/20131028112446 (In use)
RelatedPackageVersions:
 google-talkplugin 5.1.4.0-1
 totem-mozilla 3.10.1-1ubuntu2
 rhythmbox-mozilla 3.0.1-1ubuntu8
 icedtea-7-plugin 1.4.1-1ubuntu1
RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/14/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A09
dmi.board.name: 0P792H
dmi.board.vendor: Dell Inc.
dmi.board.version: A09
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A09
dmi.modalias: dmi:bvnDellInc.:bvrA09:bd04/14/2011:svnDellInc.:pnStudio1737:pvrA09:rvnDellInc.:rn0P792H:rvrA09:cvnDellInc.:ct8:cvrA09:
dmi.product.name: Studio 1737
dmi.product.version: A09
dmi.sys.vendor: Dell Inc.

[John Kim (kotux)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please answer these questions:

* Is this reproducible?
* If so, what specific steps should we take to recreate this bug?

This will help us to find and resolve the problem.

[Lonnie Lee Best (launchpad-startport)]

After another partial upgrade, last night, firefox is now back to normal styling.