Grahamster, do not comment on a post if you dont even know the rules in the nether. NO you cannot lock the spawners, and it dosent matter, if you pay any attention to these people at all they go to the nether all day SPECIFICALLY to find and destroy peoples spawners.

 

No mod lock :D And this flame will keep burning until the day mobs get turned on or people who destroy spawners all get a life :)