I have created a xorg.conf file (via Xorg -configure) and included in Section Screen: Option "Accel" "no" Things are really slow (as expected) but crashes are gone too. >From http://nouveau.freedesktop.org/wiki/EXA it says that nouveau doesn't support XAA, so there is no sense in testing the "XaaNo*" options, right? Is there something else that I can test to try to narrow this, please? Thank you again! Best regards, Nelson