For several weeks now I have been unable to update my Ubuntu system with Update Manager. It downloads updates and begins the process and then freezes with this displayed in the Details box:
exim4 (4.76-3ubuntu3.3) precise-security; urgency=medium The security fix for CVE-2016-1531 now cleans the complete environment on startup including any subprocesses such as transports that call other programs. This change may break existing installations. Two new configuration options were introduced to change the new default behaviour, keep_environment and add_environment. The debian configuration adds the macros MAIN_KEEP_ENVIRONMENT and MAIN_ADD_ENVIRONMENT to easily set the options. Marc Deslauriers <firstname.lastname@example.org> Mon, 14 Mar 2016 11:26:13 - /tmp/tmpLsdyLB
Looking in /tmp/tmpLsdyLB, I find exactly the text just displayed in the Details box.
By freezes, I mean the Update Manager is no longer responsive. It just sits there like a bump on a log until I kill it via the System Monitor.
Any help will be greatly appreciated.