Accessible login has not been properly tested on Ubuntu, and it seems to be a topic that has gone a bit stale upstream in gnome as well.
There are instructions on getting it working here: http://www.gnome.org/learn/access-guide/latest/sysadmin-27.html but they are far from user friendly and possibly out of date. Turning on accessible login by default was discussed at the gnome Boston summit and we have a spec for Edgy+1 on it as well: https://wiki.ubuntu.com/Accessibility/Specs/AccessGDM -- The greeter application appears to be crashing with "Enable accessible login" https://launchpad.net/bugs/55566 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
