Comment 27 for bug 86184

The update-alternatives solution, however, does not correct the size aspect of the cursor theme.

I chose DMZ-Black medium for my (then) karmic install on a netbook. The theme migrated correctly until natty, where the symptoms desctibed in this bug occurred: correct theme over non-GTK windows only, default everywhere else. No amount of UI-based config corrected it. After a couple hours, update-alternatives managed to bring back DMZ-Black, but not the medium size. So now my cursor switches sizes depending on the window it's hovering.