I was quite surprised to discover that both releases and beta versions of LibreOffice and OpenOffice.org do crash on OS X 10.7 when you try to access the preferences screen.
I even payed to get a copy of NeoOffice which I was able to use, quite well in the last week but ended up finding an ugly bug: bibliography references from inside frames are not numbered, they just use
 but they are listed in the bibliography list.
You end up having a bibliography like:
 ...  ...  ...  ... (this was used inside a frame)  ... (this was used inside a frame)  ...
As the maintainers of NeoOffice ask a 100$ payment to be able to post something on their forum, I do not feel that my 10$ investment was quite well made.
Also, their codebase seems to be quite ancient, compared with OpenOffice.org and LibreOffice. Their beta version is based on OOo 3.1 !?! while now Ooo is 3.3 final for quite a while.
Now, what should I use?!
Update: I removed all the preferences files related to LibreOffice and still crashes after about 30-60 seconds from start while I am inside the config window.
The crashdump is listed at http://pastebin.com/raw.php?i=BJVtsKXY