Nefunkčnost Xfce po upgradu z 15.10 na 16.04

[ntpt]

Dobrý den,

Po upgradu na 16.04   se rozpadlo prostředí Xfce. sice běží ale pokus o spuštění jakékoliv aplikace končí bídně

veškeré věci, které Xfce spouští končí  takto.

[ 1065.315828] ibus-x11[16879]: segfault at 0 ip 00007feec2356b3f sp 00007ffde55973e8 error 4 in libc-2.23.so[7feec22c1000+1c0000]
[ 1065.315856] ibus-ui-gtk3[16875]: segfault at 0 ip 00007f0a13cc8b3f sp 00007ffc000bcae8 error 4 in libc-2.23.so[7f0a13c33000+1c0000]
[ 1068.203949] nm-applet[16961]: segfault at 0 ip 00007f184a517b3f sp 00007fff6eb1a3a8 error 4 in libc-2.23.so[7f184a482000+1c0000]
[ 1068.266182] light-locker[16973]: segfault at 0 ip 00007fcf873bbb3f sp 00007ffdc7781798 error 4 in libc-2.23.so[7fcf87326000+1c0000]
[ 1068.592575] nvidia-settings[16983]: segfault at 0 ip 00007f8d84ecfb3f sp 00007ffefef07f18 error 4 in libc-2.23.so[7f8d84e3a000+1c0000]
[ 1068.840970] polkit-gnome-au[17076]: segfault at 0 ip 00007f4c102c1b3f sp 00007ffd1cff8478 error 4 in libc-2.23.so[7f4c1022c000+1c0000]
[ 1068.930742] update-notifier[17089]: segfault at 0 ip 00007ff4a99f5b3f sp 00007ffc9e8d79c8 error 4 in libc-2.23.so[7ff4a9960000+1c0000]
[ 1069.088903] notify-osd[17101]: segfault at 0 ip 00007f4c7c238b3f sp 00007fff2373b7b8 error 4 in libc-2.23.so[7f4c7c1a3000+1c0000]
[ 1069.618902] blueman-applet[17052]: segfault at 0 ip 00007f1aaf9d9b3f sp 00007fffe1732678 error 4 in libc-2.23.so[7f1aaf944000+1c0000]
[ 1069.719267] evolution-alarm[16953]: segfault at 0 ip 00007f725949cb3f sp 00007ffef9a3b568 error 4 in libc-2.23.so[7f7259407000+1c0000]
[ 1078.931214] virt-manager[17238]: segfault at 0 ip 00007f4d1c4a0b3f sp 00007ffe3e4f0c18 error 4 in libc-2.23.so[7f4d1c40b000+1c0000]