owncloud assert failure: *** glibc detected *** owncloud: invalid fastbin entry (free): 0x0000000000b97cb0 ***

Crashed out of the blue, I didn't do anything special. It was the first time this happened.

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: owncloud-client 1.0.5+repack1-0ubuntu1
Uname: Linux 3.6.7-zen+ x86_64
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
AssertionMessage: *** glibc detected *** owncloud: invalid fastbin entry (free): 0x0000000000b97cb0 ***
Date: Sun Nov 25 20:06:26 2012
ExecutablePath: /usr/bin/owncloud
InstallationDate: Installed on 2012-06-05 (173 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
ProcCmdline: owncloud
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANG=de_DE.UTF-8
 XDG_RUNTIME_DIR=<set>
Signal: 6
SourcePackage: owncloud-client
StacktraceTop:
 __libc_message (do_abort=2, fmt=0x7fb84f226028 "*** glibc detected *** %s: %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:201
 malloc_printerr (action=3, str=0x7fb84f22294b "invalid fastbin entry (free)", ptr=<optimized out>) at malloc.c:5007
 QString::free(QString::Data*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
 ?? () from /usr/lib/x86_64-linux-gnu/libQtDBus.so.4
 QDBusMessage::~QDBusMessage() () from /usr/lib/x86_64-linux-gnu/libQtDBus.so.4
Title: owncloud assert failure: *** glibc detected *** owncloud: invalid fastbin entry (free): 0x0000000000b97cb0 ***
UpgradeStatus: Upgraded to quantal on 2012-10-19 (36 days ago)
UserGroups: adm cdrom dialout dip kvm libvirtd lpadmin plugdev sambashare src sudo tracing vboxusers wireshark