unity-settings-daemon crashed with SIGSEGV in up_exported_daemon_get_lid_is_closed()

the whole system is instabil.
Especially if I use Mozc and try to change Hiragana imput into Kanji-Script then the system hangs.

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: unity-settings-daemon 15.04.1+16.04.20160209-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-17.33-generic 4.4.6
Uname: Linux 4.4.0-17-generic x86_64
ApportVersion: 2.20.1-0ubuntu1
Architecture: amd64
CrashCounter: 1
Date: Thu Apr 7 13:52:25 2016
ExecutablePath: /usr/lib/unity-settings-daemon/unity-settings-daemon
InstallationDate: Installed on 2016-02-07 (59 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
ProcCmdline: /usr/lib/unity-settings-daemon/unity-settings-daemon
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/false
SegvAnalysis:
 Segfault happened at: 0x7efc4df7ee69 <up_exported_daemon_get_lid_is_closed+9>: mov (%rbx),%rdi
 PC (0x7efc4df7ee69) ok
 source "(%rbx)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%rdi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity-settings-daemon
StacktraceTop:
 up_exported_daemon_get_lid_is_closed () from /usr/lib/x86_64-linux-gnu/libupower-glib.so.3
 gsd_power_manager_start () from /usr/lib/unity-settings-daemon-1.0/libpower.so
 ?? () from /usr/lib/unity-settings-daemon-1.0/libpower.so
 gnome_settings_plugin_info_activate ()
 ?? ()
Title: unity-settings-daemon crashed with SIGSEGV in up_exported_daemon_get_lid_is_closed()
UpgradeStatus: Upgraded to xenial on 2016-02-29 (37 days ago)
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