I tried un-installing and re-installing irqbalance (apt-get remove irqbalance; apt-get install irqbalance).
The problem did not recur. So it indeed may be a race condition, or possibly related to being the first update after a clean install. -- package irqbalance 0.55+20091017-3ubuntu2 failed to install/upgrade: subprocess installed post-installation script killed by signal (Interrupt) https://bugs.launchpad.net/bugs/530223 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to irqbalance in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs