Modern myths, got any?

I quite often hear on the radio woman claim they can multi-task and men can't. Besides the inferred sexism I find it strange that it is such a common myth. This all goes back to a gender bias experiment about house work done initially in the 60s AFAIK. They gave men and woman a number of household tasks and timed them. The experiments showed woman able to do the tasks quicker and how they utilised their time better by combining some tasks. This became known as multi-tasking and it was reported woman could multi -task better then men. The experiment was flawed as it had two groups with one with a higher level of prior experience of the tasks involved.
Recent studies on multi-tasking have shown men and woman are equally bad at it yet the modern myth remains and is constantly bandied about as acceptable sexism. Any other modern myths people want to dispel?