plymouthd crashed with SIGSEGV in ply_event_loop_process_pending_events()

[flightdown]

The crash happens after upgrading and restart. Plymouth chrashes after firefox starts up.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: plymouth 0.8.2-2ubuntu28
ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9
Uname: Linux 3.2.0-18-generic i686
NonfreeKernelModules: wl
ApportVersion: 1.94-0ubuntu2
Architecture: i386
CurrentDmesg:
 [ 58.879032] type=1400 audit(1331066563.940:32): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/mysqld" pid=1037 comm="apparmor_parser"
 [ 61.021661] init: plymouth main process (220) killed by SEGV signal
 [ 61.734682] init: plymouth-stop pre-start process (1354) terminated with status 1
Date: Tue Mar 6 20:42:44 2012
DefaultPlymouth: /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
ExecutablePath: /sbin/plymouthd
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
MachineType: Acer AOD260
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-18-generic root=UUID=00e4a054-f918-48ba-acd9-3c91d02ab850 ro quiet splash vt.handoff=7
ProcCmdline: /sbin/plymouthd --mode=boot --attach-to-session
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-18-generic root=UUID=00e4a054-f918-48ba-acd9-3c91d02ab850 ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x3dd5b7 <ply_event_loop_process_pending_events+455>: test %ecx,0x4(%esi)
 PC (0x003dd5b7) ok
 source "%ecx" ok
 destination "0x4(%esi)" (0x00000004) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: plymouth
StacktraceTop:
 ply_event_loop_process_pending_events () from /lib/libply.so.2
 ply_event_loop_run () from /lib/libply.so.2
 ?? ()
 __libc_start_main () from /lib/i386-linux-gnu/libc.so.6
 ?? ()
TextPlymouth: /lib/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
Title: plymouthd crashed with SIGSEGV in ply_event_loop_process_pending_events()
UpgradeStatus: Upgraded to precise on 2012-03-02 (4 days ago)
UserGroups:

dmi.bios.date: 04/28/2010
dmi.bios.vendor: Acer
dmi.bios.version: V1.01
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: AOD260
dmi.board.vendor: Acer
dmi.board.version: V1.01
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.01
dmi.modalias: dmi:bvnAcer:bvrV1.01:bd04/28/2010:svnAcer:pnAOD260:pvrV1.01:rvnAcer:rnAOD260:rvrV1.01:cvnAcer:ct10:cvrV1.01:
dmi.product.name: AOD260
dmi.product.version: V1.01
dmi.sys.vendor: Acer

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #849414, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.