gpgv crashed with SIGSEGV in __GI___libc_malloc()

The computer was idling and the screen was off - I had perhaps been away for 20 to 30 minutes. On unlock of the screen I saw the error message (probably not as a result of unlocking the screen). Only thing running was Chrome.

I had also just updated the latest patches etc for the 64bit 14.04 release. Perhaps this is relevant.

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: gpgv 1.4.16-1ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-23.45-generic 3.13.8
Uname: Linux 3.13.0-22-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu1
Architecture: amd64
Date: Sun Apr 6 08:55:59 2014
ExecutablePath: /usr/bin/gpgv
InstallationDate: Installed on 2013-06-30 (279 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
ProcCmdline: /usr/bin/gpgv --ignore-time-conflict --status-fd 3 --keyring /etc/apt/trusted.gpg.d/steam.gpg --keyring /etc/apt/trusted.gpg.d/tiheum-equinox.gpg --keyring /etc/apt/trusted.gpg.d/shimmerproject-ppa.gpg --keyring /etc/apt/trusted.gpg.d/numix-ppa.gpg --keyring /etc/apt/trusted.gpg.d/satyajit-happy-themes.gpg --keyring /etc/apt/trusted.gpg.d/minecraft-installer-peeps-minecraft-installer.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-y-ppa-manager.gpg --keyring /etc/apt/trusted.gpg /var/lib/apt/lists/partial/ppa.launchpad.net_numix_ppa_ubuntu_dists_trusty_Release.gpg /var/lib/apt/lists/ppa.launchpad.net_numix_ppa_ubuntu_dists_trusty_Release
ProcEnviron:
 LANG=
 PATH=(custom, no user)
 LC_MESSAGES=
SegvAnalysis:
 Segfault happened at: 0x7fd06db035b3 <__GI___libc_malloc+35>: mov %fs:(%rax),%rbx
 PC (0x7fd06db035b3) ok
 source "%fs:(%rax)" (0xffffffffffffffc0) not located in a known VMA region (needed readable region)!
 destination "%rbx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: gnupg
StacktraceTop:
 __GI___libc_malloc (bytes=1024) at malloc.c:2885
 ?? ()
 ?? ()
 ?? ()
 ?? ()
Title: gpgv crashed with SIGSEGV in __GI___libc_malloc()
UpgradeStatus: Upgraded to trusty on 2014-03-15 (21 days ago)
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