I just did my normal knoppix hard drive installl and was doing a  
apt-get update 
apt-get upgrade 
 
when a while through the process i got hit with: 
 
 
Setting up fontconfig (2.2.0-2) ... 
Installing new version of config file /etc/fonts/fonts.conf ... 
Installing new version of config file /etc/fonts/fonts.dtd ... 
Regenerating fonts cache...done. 
 
Errors were encountered while processing: 
 locales 
E: Sub-process /usr/bin/dpkg returned an error code (1) 
root@fearlessrogue:/home/knoppix# 
 
Should I be concerned?