Slow boot after Ubuntu 16.04 upgrade

My computer running Ubuntu 14.04 used to boot in around 40 seconds, but after the upgrade to Ubuntu 16.04.1, it's been much slower boot in around 2 minutes.

There seems to be a big gap in of 80+ seconds in the kernel log when nothing happens.

Code:

[    9.776990] usb 3-4.4.2: pl2303 converter now attached to ttyUSB0
[   11.510201] floppy0: no floppy controllers found
[   98.444400] vboxdrv: Found 8 processor cores
[   98.460319] vboxdrv: TSC mode is Invariant, tentative frequency 4026996449 Hz
[   98.460321] vboxdrv: Successfully loaded version 5.0.26 (interface 0x00240000

A two services take around 8 seconds each, but the rest looks pretty fast:

Code:

systemd-analyze blame
          8.121s apt-daily.service
          7.658s NetworkManager-wait-online.service
           931ms docker.service
           710ms winbind.service
           695ms nmbd.service
           647ms samba-ad-dc.service
           543ms ModemManager.service

Anything else I should look at?

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Slow boot after Ubuntu 16.04 upgrade

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