2.6.0-test3: matrox framebuffer halts booting?

If I try to boot a self-compiled kernel with the matrox framebuffer, the booting process halts after 'Freeing unused kernel memory'.

After that, the system isn't hung (numlock works, ctrl-alt-del works) but it also doesn't boot (not reachable over the network, blindly logging in doesn't work). Before that, the framebuffer seems to work - I see a resolution change and a penguin boot-logo.