plymouthd crashed with SIGSEGV in ply_trigger_add_handler()

ok imeet this,

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: plymouth 0.8.8-0ubuntu5
ProcVersionSignature: Ubuntu 3.8.0-0.2-generic 3.8.0-rc3
Uname: Linux 3.8.0-0-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.8-0ubuntu1
Architecture: amd64
Date: Fri Jan 11 19:53:17 2013
DefaultPlymouth: /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
ExecutablePath: /sbin/plymouthd
InstallationDate: Installed on 2012-12-19 (22 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
MachineType: TOSHIBA Satellite C805
MarkForUpload: True
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-0-generic root=UUID=6c83a3cc-731f-4123-8360-88115fa22dec ro quiet splash vt.handoff=7
ProcCmdline: @sbin/plymouthd --mode=boot --attach-to-session
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-0-generic root=UUID=6c83a3cc-731f-4123-8360-88115fa22dec ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x7f1ae65e8e8b <ply_trigger_add_handler+43>: mov (%rbx),%rdi
 PC (0x7f1ae65e8e8b) ok
 source "(%rbx)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%rdi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: plymouth
StacktraceTop:
 ply_trigger_add_handler () from /lib/x86_64-linux-gnu/libply.so.2
 ?? ()
 ply_event_loop_process_pending_events () from /lib/x86_64-linux-gnu/libply.so.2
 ply_event_loop_run () from /lib/x86_64-linux-gnu/libply.so.2
 ?? ()
TextPlymouth: /lib/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
Title: plymouthd crashed with SIGSEGV in ply_trigger_add_handler()
UpgradeStatus: Upgraded to raring on 2013-01-05 (6 days ago)
UserGroups:

dmi.bios.date: 03/01/2012
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: 1.20
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: Type2 - Board Product Name1
dmi.board.vendor: Type2 - Board Vendor Name1
dmi.board.version: Type2 - Board Version
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: OEM Chassis Manufacturer
dmi.chassis.version: OEM Chassis Version
dmi.modalias: dmi:bvnInsydeCorp.:bvr1.20:bd03/01/2012:svnTOSHIBA:pnSatelliteC805:pvrPSC6EQ-00M004:rvnType2-BoardVendorName1:rnType2-BoardProductName1:rvrType2-BoardVersion:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion:
dmi.product.name: Satellite C805
dmi.product.version: PSC6EQ-00M004
dmi.sys.vendor: TOSHIBA