1. Got error: E: Internal Error, Could not perform immediate configuration (1) on debconf 
To solve:
wget http://free.nchc.org.tw/debian/pool/main/d/debconf/debconf...
dpkg -r debconf-i18n
dpkg --force-depends -i debconf-english_1.5.24_all.deb
dpkg -i debconf_1.5.24_all.deb

then "apt-get -f dist-upgrade". 

Ref: http://groups.google.com/group/alt.os.linux.debian/browse_thread/thread/3944b8470cd4ecea