[Trusty] notification-daemon crashed when starting the session

While starting the session, apport came up with a crash, stating that the notification-daemon had crashed. My internet connection was not ready, so I started the wireless connection, which was ready in little time, and when I clicked on "Continue" in Aprport, well, apport crashed and didn't re appear to offer to send a bug about itself.

So I headed to /var/crash and found a long file with lots of information, which I am bringing here now, for good use.

System:
$ uname -a
Linux gazelle 3.13.0-30-generic #55-Ubuntu SMP Fri Jul 4 21:40:53 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04 LTS"
$

Environment, Openbox. The other information should be in the crash report attached.

Regards,
Mélodie