CARPE DIEM: Evidence of a New "Reverse Gender Wage Gap" (via Newsalert):

In other words, if you control for all of the important variables that contribute to wage differentials (age, marital status, having children, etc.), i.e. impose ceteris paribus conditions, there is no evidence of gender discrimination, and either there is no statistically significant wage gap, or now there's a wage gap in favor of women.