(Also, bear in mind that when Ctrl+Alt+Backspace was disabled by default in X, part of the rationale was that you could more effectively kill off a broken X server using SysRq; so dropping SysRq would have concrete practical impacts on troubleshooting of stock Ubuntu systems.)
(Also, bear in mind that when Ctrl+Alt+Backspace was disabled by default in X, part of the rationale was that you could more effectively kill off a broken X server using SysRq; so dropping SysRq would have concrete practical impacts on troubleshooting of stock Ubuntu systems.)