You need to goto Tools-> Options –> memory from menu
We need to reduce the number of Undo steps from 100 to 30 steps.
We need to increase the Graphics cache from 6 MB to 128 MB
We need to Set Memory per object to 20MB from the default of 5MB
We also need to Set the number of objects under Cache for inserted objects at 20.
and finally we need to Check OpenOffice.org Quickstarter. This option is available under Windows and Ubuntu Open office for sure but for other OS and distro it may or may not be available.
Now start the Openoffice and notice the blistering startup speed of all apps.
This entire hack has been provided by www.zolved.com