systemd 230-7~bpo8+2 (bug causes shutdown freeze)

[<garnut992-debian@yahoo.com>]

There is a serious bug is systemd 230-7~bpo8+2 in jessie-backports that causes the shutdown procedure to hang/freeze, if you have a encrypted disk. 

You get a message "stopping remaining crypto disks" and then the shutdown procedure hangs and the whole system freezes, leaving only a hard power off to shutdown one's system.

See: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=791944
And: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=792552

This was fixed in systemd 233-1.

See: http://metadata.ftp-master.debian.org/changelogs/main/s/systemd/unstable_changelog

So systemd in testing and unstable have the fix. Please upgrade debian backports to a version without this bug. Thank you.