  We have performed a new exact evaluation of the fluctuation determinant
$\kappa$ of the electroweak sphaleron with $\Theta _W =0$. The results differ
significantly from a previous calculation of this quantity by Carson et. al. .
We find that $\kappa$ is of order 1 in units $(gv)^6$ while the previous
results indicated a strong suppression of the sphaleron transition by this
factor.
