I've been using OS X for a long time, but I recently bought a MacBook Pro and this is my first exposure to Leopard, Snow Leopard in this case. I find it disturbing that working in a number of applications, I'm frqequently confronted with pop-up menus containing options such as "Back, Reload, Bookmark this Page, Send Link, Select All." Another reads "Undo, Select, Check Spelling." I don't know what precipitates these pop-ups, but I have no use for them. Could anyone tell me how to prevent them from appearing?