Sorry if it has been mentioned but nobody seems to have this specific issue posted. More often than note, especially in browser or news, when I press the menu button I get the task manager instead. Anyone see this
Is this the Tasks application, or is it that screen that shows all of your running apps and the ability to choose one to go to?
If it's the first one, you have a very strange issue.
If it's the second one, then you're holding the menu button for too long. You could try turning your Key Rate down some, Options> Typing and Language> Keyboard> Key Rate