Sorry, i have no idea. I've not encountered that before. Apt-get is the reference utility for the debian package system, so if the gui app manager fails you, you can trust apt-get to work if it's at all possible--but you do have to close app manager first.

ArnimS: The extras-devel version has nothing added to it that would work without the joydev package. It's probably a bug that HAM is pushing it as an update when it has broken dependencies... While i'm not very impressed by the accelerometer control, that was the intent of the devel version and it doesn't make any sense to downgrade it. Just disable -devel like an ordinary person. :P

Maybe Attila will give an update on joydev. I have considered packaging up the compiled module, but (1) using a precompiled kernel module package isn't really appropriate on free afaik and (2) i don't really know how to install a kernel module via deb and am willing to leave that to him unless he decides it's not something he wants to do.