if ! grep -q KERN $SPELL_CONFIG
then KERN=2.4 && if [[ $(uname -r) == 2.6* ]] ; 
     then if query "Install 2.6 kernel headers for userspace ? \n Uncommon spells may fail with those, please report bugs!" y
          then KERN=2.6
          fi
     fi
echo KERN=$KERN >> $SPELL_CONFIG 
fi
