Comment 54 for bug 1532226

I have 3 different installations of Ubuntu Xenial on different partitions of the same desktop PC.
sda3 installed dic 18 2015 - sda10 mar 10 2016 - sda9 apr 6 2016
the 3 systems are upgraded with all the maintenance available today mon-apr-11
the installed applications are (about) the same
the problem still appear on 2 install (sda3 and sda10) but seems disappeared on sda9 (shutdown-restart 9 times)

corrado@corrado-xeni:~$ inxi -Fx
System: Host: corrado-xeni Kernel: 4.4.0-18-generic x86_64 (64 bit gcc: 5.3.1)
           Desktop: Unity 7.4.0 (Gtk 3.18.9-1ubuntu3)
           Distro: Ubuntu 16.04 xenial
Machine: Mobo: Gigabyte model: H87M-D3H v: x.x
           Bios: American Megatrends v: F3 date: 04/24/2013
CPU: Dual core Intel Core i3-4130 (-HT-MCP-) cache: 3072 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 13569
           clock speeds: max: 3400 MHz 1: 2750 MHz 2: 2800 MHz 3: 2891 MHz
           4: 2622 MHz
Graphics: Card: Intel 4th Generation Core Processor Family Integrated Graphics Controller
           bus-ID: 00:02.0
           Display Server: X.Org 1.18.3 drivers: intel (unloaded: fbdev,vesa)
           Resolution: 1680x1050@59.88hz
           GLX Renderer: Mesa DRI Intel Haswell
           GLX Version: 3.0 Mesa 11.2.0 Direct Rendering: Yes
Audio: Card-1 Intel 8 Series/C220 Series High Definition Audio Controller
           driver: snd_hda_intel bus-ID: 00:1b.0
           Card-2 Intel Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller
           driver: snd_hda_intel bus-ID: 00:03.0
           Sound: Advanced Linux Sound Architecture v: k4.4.0-18-generic
Network: Card: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           driver: r8169 v: 2.3LK-NAPI port: e000 bus-ID: 02:00.0
           IF: enp2s0 state: up speed: 100 Mbps duplex: full
           mac: 94:de:80:7e:90:a7
Drives: HDD Total Size: 1000.2GB (9.5% used)
           ID-1: /dev/sda model: ST1000DM003 size: 1000.2GB temp: 32C
Partition: ID-1: / size: 32G used: 6.7G (23%) fs: ext4 dev: /dev/sda9
           ID-2: swap-1 size: 8.59GB used: 0.00GB (0%) fs: swap dev: /dev/sda2
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 29.8C mobo: 27.8C
           Fan Speeds (in rpm): cpu: N/A
Info: Processes: 239 Uptime: 7 min Memory: 604.2/7863.1MB
           Init: systemd runlevel: 5 Gcc sys: 5.3.1
           Client: Shell (bash 4.3.421) inxi: 2.2.35
corrado@corrado-xeni:~$