Anecdotal, my impression is that women tend to have much lower tolerance for people they dislike. Seem to remember reading the theory that for men it was important to work well in random groups (like war or hunting parties), whereas the sphere of the women was usually more tightly knit, so perhaps it was more important to weed out unpleasant individuals in the tightly knit sphere.

Might have read that in the infamous "Is there anything good about men" essay, but not sure.

As an example for my experience: in the student hall, there were sometimes people who smelled bad or didn't integrate. The men would usually just ignore them (after all, most people only live in student halls for a limited time, so the problem would resolve itself), whereas the women would start banding together and mobbing against them. They would become more and more preoccupied with plans to get rid of the unwanted person.

To a lesser degree, I saw this kind of thing play out at companies or shared housing situations, too.