At each invocation of oocalc, oowriter or ooimpress, the
/usr/lib/openoffice/program/soffice shell script is executed.

This script will quite always guess the same environment variables. Moreover,
guessing those values is time consuming.

I think we could cache the below environment settings into a
/var/lib/openoffice/basis3.1/program/environment.sh file:
-----
FILE_LOCKING=auto
OPENGL_SUPPORT=no
SAL_ENABLE_FILE_LOCKING=1
SAL_NOOPENGL=true
JITC_PROCESSOR_TYPE=6
sd_cwd=/usr/lib/openoffice/program
sd_binary=/usr/lib/openoffice/program/oosplash.bin
-----

Those environment settings could be calculated again by a package manager
trigger or a daily cron task.

On my host the cold startup of Open Office Writer last ~24 seconds and guessing
the environment variables is quite 30% of the cold startup time !