-> parallel startup of services
-----------------------------
Into /etc/default/rcS add this:
# Support for starting init.d scripts on the same level in 
# parallel, to speed up the boot process a bit. 
CONCURRENCY=shell 
----------------------------

generating locales

vim /etc/locale.gen

add there for instance

en_US UTF-8

run locale-gen script

or

/usr/sbin/dpkg-reconfigure locales

:)

-> if system does not switch to summer time with ntp
--------------------------------------------
in /etc/default/rcS
change
UTC=no
to 
UTC=yes

then
/etc/init.d/ntp-server stop
ntpdate ntp.nasa.gov
/etc/init.d/hwclock.sh restart
/etc/init.d/ntp-server start
---------------------------------------------

-> removing service from autostart
----------------------------
update-rc.d -f spread remove
---------------------------