package isc-dhcp-client 4.2.4-7ubuntu11 failed to install/upgrade: subprocess new pre-installation script returned error exit status 2

[wil]

error pops up at startup

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: isc-dhcp-client 4.2.4-7ubuntu11
ProcVersionSignature: Ubuntu 3.13.0-22.44-generic 3.13.8
Uname: Linux 3.13.0-22-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14-0ubuntu1
Architecture: amd64
Date: Fri Apr 4 18:06:18 2014
DhclientLeases:

DuplicateSignature: package:isc-dhcp-client:4.2.4-7ubuntu11:subprocess new pre-installation script returned error exit status 2
ErrorMessage: subprocess new pre-installation script returned error exit status 2
ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-3.13.0-22-generic root=UUID=3e02d07c-2b13-4601-b5a9-efc21776ff71 ro quiet splash
SourcePackage: isc-dhcp
Title: package isc-dhcp-client 4.2.4-7ubuntu11 failed to install/upgrade: subprocess new pre-installation script returned error exit status 2
UpgradeStatus: Upgraded to trusty on 2014-03-29 (5 days ago)

[Launchpad Janitor (janitor)]

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