The DHCP client crashes on reinstall and does not work properly

The DHCP client crashes or something while trying to upgrade and restore the missing ppp file from /etc/ipmasq/
Im using ipmasq and dnsmasq to forward my connection.

root@Elayne-coolc:/home/coolc# apt-get upgrade dnsmasq ipmasq
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0B of additional disk space will be used.
Do you want to continue [Y/n]? y
debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable
Setting up dnsmasq (2.47-3) ...
 * Starting DNS forwarder and DHCP server dnsmasq [ OK ]

root@Elayne-coolc:/home/coolc# dpkg-reconfigure ipmasq
debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable

ProblemType: Package
Architecture: i386
DistroRelease: Ubuntu 9.04
ErrorMessage: subprocess post-installation script returned error exit status 1
NonfreeKernelModules: nvidia
Package: dhcp3-client 3.1.1-5ubuntu8
SourcePackage: dhcp3
Title: package dhcp3-client 3.1.1-5ubuntu8 failed to install/upgrade: subprocess post-installation script returned error exit status 1
Uname: Linux 2.6.28-11-generic i686