how do i roll back an update?

Ubuntu Software icon broken after update, among other things: This seems to be the update that broke it:
Start-Date: 2016-12-20 16:25:21Commandline: aptdaemon role='role-upgrade-system' sender=':1.83'
Upgrade: ifupdown:amd64 (0.8.10ubuntu1.1, 0.8.10ubuntu1.2), libwbclient0:amd64 (2:4.3.11+dfsg-0ubuntu0.16.04.1, 2:4.3.11+dfsg-0ubuntu0.16.04.3), isc-dhcp-common:amd64 (4.3.3-5ubuntu12.4, 4.3.3-5ubuntu12.6), initramfs-tools-bin:amd64 (0.122ubuntu8.5, 0.122ubuntu8.7), samba-libs:amd64 (2:4.3.11+dfsg-0ubuntu0.16.04.1, 2:4.3.11+dfsg-0ubuntu0.16.04.3), libsmbclient:amd64 (2:4.3.11+dfsg-0ubuntu0.16.04.1, 2:4.3.11+dfsg-0ubuntu0.16.04.3), isc-dhcp-client:amd64 (4.3.3-5ubuntu12.4, 4.3.3-5ubuntu12.6), initramfs-tools-core:amd64 (0.122ubuntu8.5, 0.122ubuntu8.7), initramfs-tools:amd64 (0.122ubuntu8.5, 0.122ubuntu8.7)
End-Date: 2016-12-20 16:26:29

TIA

Learning...Chris