unlock all locked files

find . -flags uchg -exec chflags nouchg {} \;

list all locked file from shell

find . -flags uchg

Setting locales correctly on Mac OSX Terminal application

terminal - settings
choose profile
choose tab "advanced"

uncheck "set locale environment variables on startup"

create symbolic link

sudo ln -s /usr/share/roundcube /var/www/roundcube

roundcube reconfigure

dpkg-reconfigure roundcube-core

sync time in debian

aptitude install ntp

list of debain mirrors

http://backports.debian.org/Mirrors/