No need to "donate". You do know that most of the coders of "free software" are on a company payroll, don´t you?. For instance, I´ve bought every version of StarOffice since version 5.0 (back when it was a product of German firm Stardivision Gmbh before Sun bought it and open sourced it, creating OpenOffice.org).
So by buying StarOffice I was supporting the commercial product and thus the salaries of the Sun programmers working on OpenOffice.org, plus I got clip-art and a commercial-grade spellchecker.
> I've personally donated €100 to LibreOffice the day it was announced,
You do know about Novell´s involvement, right?. And you do know that Novell was the first to "fork" OO.o with their "Go-OO" build of OpenOffice, right?. And you do know as well that "Libre" office has been already polluted to include "Mono" hooks, right?. (Mono as in "Novell´s re-implementation of the Microsoft .Net runtime")
I´m staying with OpenOffice.org.
But hey, it´s a matter of personal choice.
FC PS: only the Database GUI module in OO.o is written in Java. The rest of the apps are compiled C/C++. And it isn´t slow at all. You must have an ancient computer. Works like a charm in my 1.6 Ghz Atom powered netbook with 1GB RAM.