Slow boot on Fedora 24

Last week, I installed Fedora 24. Previously, on the same computer, I was using Fedora 22 (Fedora 24 is a clean installation, not a package upgrade).

What surprised me is that Fedora 24 is booting really slow in comparison with 22. The installation is/was the default one - I haven't changed anything in the system configuration. See the ouput of systemd-analyze:

Startup finished in 1.328s (keel) + 2.985s (initrd) + 1min 31.705s (userspace) = 1min 36.019s

I don't know how much time Fedora 22 was taking but I am pretty sure it was under 30 seconds...

Now see what systemd-analyze blame says:

     41.224s plymouth-quit-wait.service
     14.181s systemd-cryptsetup@luksx2d09638d45x2d10afx2d4db9x2db21fx2d79a4a80d6a31.service
     13.631s systemd-cryptsetup@luksx2d0efbd95cx2d4199x2d4060x2d83dex2da992a5c3f72a.service
      9.688s firewalld.service
      7.818s systemd-jouald.service
      5.693s systemd-udev-settle.service
      3.977s dev-mapper-systemx2droot.device
      3.049s udisks2.service
      2.885s abrtd.service
      2.865s lvm2-pvscan@8:5.service
      2.772s accounts-daemon.service
      1.909s systemd-binfmt.service
      1.886s ModemManager.service
      1.882s systemd-rfkill.service
      1.831s dnf-makecache.service
      1.764s polkit.service
      1.673s systemd-joual-flush.service
      1.633s proc-sys-fs-binfmt_misc.mount
      1.628s lvm2-monitor.service
      1.410s plymouth-start.service
      1.308s proc-fs-nfsd.mount
      1.023s systemd-udevd.service
      1.021s NetworkManager.service
      1.005s systemd-logind.service
      1.001s iio-sensor-proxy.service
       992ms avahi-daemon.service
       971ms gssproxy.service
       971ms livesys.service
       964ms rtkit-daemon.service
       848ms systemd-random-seed.service
       805ms abrt-ccpp.service
       724ms fedora-readonly.service
       623ms systemd-tmpfiles-setup-dev.service
       611ms colord.service
       591ms gdm.service
       585ms [email protected]
       572ms dev-mapper-systemx2dswap.swap
       532ms cups.service
       452ms lvm2-pvscan@8:1.service
       375ms auditd.service
       283ms systemd-udev-trigger.service
       264ms dmraid-activation.service
       263ms fedora-import-state.service
       253ms upower.service
       236ms systemd-fsck@dev-mapper-luksx2d09638d45x2d10afx2d4db9x2db21fx2d79a4a80d6a31.service
       230ms systemd-sysctl.service
       229ms kmod-static-nodes.service
       225ms dev-hugepages.mount
       224ms sys-keel-debug.mount
       218ms wpa_supplicant.service
       195ms systemd-tmpfiles-setup.service
       165ms [email protected]
       165ms systemd-fsck@dev-mapper-luksx2d0efbd95cx2d4199x2d4060x2d83dex2da992a5c3f72a.service

Could you please help me to find out the problem and fix it? I don't know what should I check now... but I don't think that some of the values above are normal.

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