Setting up base-files (6.0) ...
Installing new version of config file /etc/debian_version ...
Installing new version of config file /etc/issue ...
Installing new version of config file /etc/issue.net ...

bitlz@mk:/etc/ppp$ cat /etc/debian_version 
6.0
bitlz@mk:/etc/ppp$ cat /etc/issue
Debian GNU/Linux 6.0 \n \l