gnome-shell crashes on login when opening activities view

[JIR]

This happens occasionally immediately after I've booted my machine and logged in. I'm guessing there's a race condition somewhere, since it seems to happen more often if I try to bring up the activities view while the CPU load is too high. Sometimes restarting the shell (Alt-F2, r) prevents this, other times not.

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: gnome-shell 3.10.2.1-0ubuntu1~saucy1 [origin: LP-PPA-gnome3-team-gnome3]
ProcVersionSignature: Ubuntu 3.11.0-17.31-generic 3.11.10.3
Uname: Linux 3.11.0-17-generic i686
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: i386
Date: Wed Feb 26 17:56:00 2014
DisplayManager: gdm
ExecutablePath: /usr/bin/gnome-shell
InstallationDate: Installed on 2012-10-20 (494 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.2)
MarkForUpload: True
ProcCmdline: /usr/bin/gnome-shell
SegvAnalysis:
 Segfault happened at: 0xb5895d74: cmp %esi,(%edx)
 PC (0xb5895d74) ok
 source "%esi" ok
 destination "(%edx)" (0x0003f6b6) not located in a known VMA region (needed writable region)!
 Stack memory exhausted (SP below stack segment)
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: gnome-shell
StacktraceTop:
 ?? () from /usr/lib/i386-linux-gnu/libfreetype.so.6
 ?? () from /usr/lib/i386-linux-gnu/libfreetype.so.6
 ?? () from /usr/lib/i386-linux-gnu/libfreetype.so.6
 ?? () from /usr/lib/i386-linux-gnu/libfreetype.so.6
 FT_Outline_Decompose () from /usr/lib/i386-linux-gnu/libfreetype.so.6
Title: gnome-shell crashed with SIGSEGV in FT_Outline_Decompose()
UpgradeStatus: Upgraded to saucy on 2013-10-21 (128 days ago)
UserGroups: adm cdrom dialout dip fax floppy fuse lpadmin plugdev sambashare sudo tape vboxusers video
gdmSessionLog:
 /etc/gdm/Xsession: Beginning session setup...
 localuser:john being added to access control list
 localuser:john being added to access control list
 Script for cjkv started at run_im.
 Script for default started at run_im.

[Ubuntu GNOME (ug-bot)]

Stacktrace:
 #0 0xb5895d74 in ?? () from /home/darkxst/gnome3-i386/usr/lib/i386-linux-gnu/libfreetype.so.6
 No symbol table info available.
 #1 0x00000000 in ?? ()
 No symbol table info available.
StacktraceSource:
 #0 0xb5895d74 in ?? () from /home/darkxst/gnome3-i386/usr/lib/i386-linux-gnu/libfreetype.so.6
 #1 0x00000000 in ?? ()
StacktraceTop:
 ?? () from /home/darkxst/gnome3-i386/usr/lib/i386-linux-gnu/libfreetype.so.6
 ?? ()