I'm trying to publish the K2 modules (categories, clouds..) in front page, but without success. They appear only in categories and items inside the joomla.. NOT in the index.php!
There's something that I've to set? I've linked the "Home" voice to "k2 component">"blog aspect"> and i've put the User name to display his categories.. (fabiorolfi.net)
There is someone that can help me?

You can make a category specially for the homepage and put whatever modules you like under it.