This is not a software flaw, it's hardware (blame Gasia).
Even on windows it doesn't work correctly...
I'm not sure what I can do about this, the usual way to connect a sixaxis fails (probably because sixpair itself doesn't work for it).
I'll try to get them working again next month (got some new stuff to try), but I can't promise results.
Can someone tell if it works ok on a PS3? (a video demo will be great)