My daughter complains that the 'boys are stinky and loud' and that's why she doesn't go into computer lab more often. She says that the majority of the boys in the lab are 'playing games' and are 'obnoxious'. If you've ever been in a computer lab with a bunch of middle schoolers, you will undoubtedly agree with her statements.
Simple solution? Build a partition down the middle of the computer lab and make one side for the girls and one for the boys.