wingpanel crashed with SIGSEGV in strlen().

After I unplug my second screen everything crashed. I tried to plug back the screen but nothing happend and everything doesn't work like the keyboard and the mouse so I wasn't able to go to a command screen to reboot.

I have multiple workspace like 7 with more than 10 software running. I needed to restart my computer with the reset button.

ProblemType: Crash
DistroRelease: elementary OS 0.3
Package: wingpanel 0.3~r198+pkg19~ubuntu0.3.1 [origin: LP-PPA-elementary-os-daily]
ProcVersionSignature: Ubuntu 3.13.0-44.73-generic 3.13.11-ckt12
Uname: Linux 3.13.0-44-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
CrashCounter: 1
CrashDB: wingpanel
CurrentDesktop: Pantheon
Date: Fri Jan 16 10:02:55 2015
ExecutablePath: /usr/bin/wingpanel
GSettings:
 org.pantheon.desktop.wingpanel show-launcher true
 org.pantheon.desktop.wingpanel default-launcher 'slingshot-launcher'
 org.pantheon.desktop.wingpanel auto-adjust-alpha true
 org.pantheon.desktop.wingpanel background-alpha 0.80000000000000004
 org.pantheon.desktop.wingpanel blacklist ['libappmenu.so']
GsettingsChanges:

InstallationDate: Installed on 2015-01-11 (4 days ago)
InstallationMedia: elementary OS 0.3 "Freya" - Daily amd64 (20140810)
ProcCmdline: wingpanel
SegvAnalysis:
 Segfault happened at: 0x7f730020467a <strlen+42>: movdqu (%rax),%xmm12
 PC (0x7f730020467a) ok
 source "(%rax)" (0x36312f726f6c6f63) not located in a known VMA region (needed readable region)!
 destination "%xmm12" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: wingpanel
StacktraceTop:
 strlen () at ../sysdeps/x86_64/strlen.S:106
 g_strdup () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? ()
 wingpanel_indicator_widget_get_entry_name ()
 ?? ()
Title: wingpanel crashed with SIGSEGV in strlen()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo