I tried to to install from here http://www.mozilla.com/en-US/m/alpha, it installs fine but when running it just segfaults as well.

I'll try they .deb directly. Anyone knows if there's a nightlies repo somewhere for this 2.0a1 (soon to be 4.0a1), to hook me up to ?

EDIT : the direct .deb install also crashes when ran ... anyone has a different/better link ?