Mine

somekool@somekool-laptop:~$ sudo apt-get install ... 
...
...
Processing triggers for libc6 ...
ldconfig deferred processing now taking place
Errors were encountered while processing:
 kdm
E: Sub-process /usr/bin/dpkg returned an error code (1)
somekool@somekool-laptop:~$


somekool@somekool-laptop:~$ sudo fuser -vki /var/lib/dpkg/lock
somekool@somekool-laptop:~$ sudo dpkg --configure -a
Setting up kdm (4:3.5.8-2ubuntu3~gutsy1~ppa1) ...
dpkg: error processing kdm (--configure):
 subprocess post-installation script returned error exit status 1
Errors were encountered while processing:
 kdm
somekool@somekool-laptop:~$