It used to work with the 2.4.* series, but now it doesn't. I have had already a bug related to this, in here: http://bugme.osdl.org/show_bug.cgi?id=1822 but although it had a quick fix, it still can't mount automagically my camera.
Created attachment 2323 [details] kernel log
after upgrading hotplug, it started working as expected.