wsky,

I'm late. Could you meanwhile sort it out? If so: was it Keet's suggestion or another solution?

Emmanuel Puybaret suggested an additional java parameter: for the furniture library editor, a java app by him as well.

I'm using nvidia, too. The only thing that helped me was a switch from the proprietary driver to the open source nouveau (see link above).

However, nouveau is not the greatest driver either due to nvidia's denial of support. I'm cured from nvidia.