package isc-dhcp-server 4.1.ESV-R4-0ubuntu5.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[nihaopaul]

just crashes on boot

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: isc-dhcp-server 4.1.ESV-R4-0ubuntu5.1
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18
Uname: Linux 3.2.0-25-generic x86_64
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
Date: Sun Jun 3 12:48:34 2012
DhServerLeases:

ErrorMessage: subprocess installed post-installation script returned error exit status 1
ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-3.2.0-25-generic root=UUID=e2476637-ab2f-48f0-a4c4-66101493cdb6 ro acpi_osi=Linux acpi_backlight=vendor quiet splash vt.handoff=7
SourcePackage: isc-dhcp
Title: package isc-dhcp-server 4.1.ESV-R4-0ubuntu5.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to precise on 2012-05-02 (32 days ago)
mtime.conffile..etc.dhcp.dhcpd.conf: 2011-04-30T00:39:09

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.