Thanks guys for not giving up easily. I know my code it's not perfect, but I'm learning everyday how to be a better programmer.
For those who need sixad-raw, simply running:
(Change "X" to the dev #)
sudo sixad-raw /dev/hidrawX
This will activate the sixad-raw driver without need to go trough the GUI.
Sorry that I forgot to say this, but on PS3/Jaunty you need to activate "Legacy USB driver" in QtSixA -> Sixaxis Settings. Karmic users don't need this.
You should also try to enable "UInput at boot" and reboot the system if it still doesn't work.
I'm now a little busy with another project (http://kxstudio.sourceforge.net/), but I'll make some time to code QtSixA again.
My idea is to rewrite the code (maybe PyKDE?), and start working on Rumble too.
And thanks for all the people that has been donating!
I'll get a DualShock3 soon thanks to you guys!