  In this paper we study the inefficiency ratio of stable equilibria in load
balancing games introduced by Asadpour and Saberi [3]. We prove tighter lower
and upper bounds of 7/6 and 4/3, respectively. This improves over the best
known bounds in problem (19/18 and 3/2, respectively). Equivalently, the
results apply to the question of how well the optimum for the $L_2$ -norm can
approximate the $L_{\infty}$-norm (makespan) in identical machines scheduling.
