It looks as though clamav failed to stop before the upgrade. Could you show the result of:
service clamav-milter status ps -ef | grep clamav-milter ** Changed in: clamav (Ubuntu) Importance: Undecided => Medium ** Changed in: clamav (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1027646 Title: package clamav-milter 0.97.5+dfsg-1ubuntu0.12.04.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/clamav/+bug/1027646/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs