Error box when tryin to reboot

[ernsteiswuerfel]

Using the shutdown->reboot option from the MATE system menu does not reboot instantly. Instead it shows an error box:

A program is still running:
at-spi-registryd.desktop
Not responding

One can select "Reboot Anyway", whick works as expected.

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: mate-session-manager 1.12.2-1
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CasperVersion: 1.376
CurrentDesktop: MATE
Date: Fri May 6 21:46:01 2016
ExecutablePath: /usr/bin/mate-session
LiveMediaBuild: Ubuntu-MATE 16.10 "Yakkety Yak" - Alpha amd64 (20160506)
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: mate-session-manager
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1579245

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.