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Ever since my update to 12.04, Shift+Backspace ends my X Session/Logs me out. How can I stop this?

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Is, by any chance, one of your <kbd>Alt</kbd> keys stuck? – Michael Wild Apr 27 '12 at 15:51

This seems to have fixed the issue:

xmodmap -e "keycode 22 = BackSpace BackSpace Terminate_Server"

xmodmap -pke > .Xmodmap
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