Same here, I was experiencing this problem (on 16.04 xenial) each time I ran 'sudo apt update' or any apt commands.
Fixed by installing 'packagekit'. Not even sure what that does, but it must have done something because the error is gone now -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/613412 Title: packagekit in maverick causes error in apt operations To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/packagekit/+bug/613412/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs