First time this ever happened to me: installed the Hebrew version of 2.7.1. Everything works OK except the admin menus won’t stay open – I click on Pages, for example, it opens. I click on Plugins – the plugins menu opens but the Pages closes. Only the Posts menu remains open no matter what I do. I tried it on FF and IE – same thing.
Also tried clearing cache and cookies. Nothing.
Tried disabling all plugins – nothing.