Hi
On a new install of K2, I have no icons for the links Print, Media, Gallery ....

What can be the problem ?
www.awesomescreenshot.com/image/2338947/2b14d677a62c8e3495d40923944af271

This seems like a template issue.
Can you share a link?

As there is no way to send private message, here is the URL . But I will delete it as soon as you've seen it.

.... and I just noticed that, even allowed in the K2 parameters, the frontend editing icon is not displayed for the K2 items when I'm connected. (It is displayed for the Joomla articles).
... and something for the download icon of attached files...

From what I can see, these links apart from the magnifier do not contain any icon fonts.
Since the icon fonts are already being loaded you can override the extension's files and place your own icons.

Thanks Krikor, but same thing as for my other post : I have no idea how to add these missing icons in K2 : print, media, gallery, edit in frontend, download attached files.

I thought all these icons were included in K2.

If you could explain me that, or give me a link to a tutorial on how to add these icons ....

The required CSS classes are located in the k2.fonts.css file.
They can be used just like any other icon font in the template's overrides..

eg: