signon-ui crashed with SIGSEGV in SignOnUi::DialogRequestPrivate::~DialogRequestPrivate()

Happened on startup. I had a notification that one of my Google accounts needed re-credentialing so may be related to that.

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: signon-ui 0.14-0ubuntu2
ProcVersionSignature: Ubuntu 3.9.0-3.8-generic 3.9.4
Uname: Linux 3.9.0-3-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.10.2-0ubuntu1
Architecture: amd64
Date: Wed Jun 5 10:10:21 2013
Disassembly: => 0x0: Cannot access memory at address 0x0
ExecutablePath: /usr/bin/signon-ui
InstallationDate: Installed on 2012-10-07 (240 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20121007)
MarkForUpload: True
ProcCmdline: /usr/bin/signon-ui
ProcEnviron:
 XDG_RUNTIME_DIR=<set>
 SHELL=/bin/zsh
 LANGUAGE=en_GB:en
 PATH=(custom, user)
 LANG=en_GB.UTF-8
SegvAnalysis:
 Segfault happened at: 0x0: Cannot access memory at address 0x0
 PC (0x00000000) not located in a known VMA region (needed executable region)!
SegvReason: executing NULL VMA
Signal: 11
SourcePackage: signon-ui
StacktraceTop:
 ?? ()
 ?? ()
 ?? ()
 QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
 QObject::~QObject() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
Title: signon-ui crashed with SIGSEGV in QObjectPrivate::deleteChildren()
UpgradeStatus: Upgraded to saucy on 2013-05-07 (29 days ago)
UserGroups: adm cdrom dip kvm libvirtd lpadmin plugdev sambashare sudo vboxusers