app-office/openoffice-2.2.0 ignores umask. For one user I've set 'umask 077' in his ~/.bashrc. So every normal file which is written by this user should have and usually has the file permissions 600 (rw-------) but when this user saves a document with OpenOffice.org the file has the permissions 644 (rw-r--r--) instead.
I noticed that this problem also exists with some other packages. See also bug #177998 (media-video/kaffeine) and bug #178000 (media-video/projectx).
After searching a while in the forums and because there are at least 3 GUI programs affected I guess that it could be a bug not in OpenOffice.org itself but in KDE (3.5.6) which doesn't source ~/.bashrc or ~/.bash_profile during a login even if it should. And every hint I found in the forums didn't help or was already implemented. Maybe this bug should be reassigned to KDE herd or KDE herd should be added to the CC list. I don't know if this helps but I'm starting KDE by /etc/init.d/xdm at boot time in the default runlevel.
It's not an openoffice bug but a general KDE issue which affects every GUI program running in KDE. *** This bug has been marked as a duplicate of bug 177998 ***