Problem with the users icons

Hi guys, i have a problem with the users icons, they appear stretched, maybe I touched some css code but I can't find back were is this,
this website http://www.krapinvaders.com/en/parkour
you can see the icons in the Lastest comments module in the sidebar

please help me

thank you

Hi,
if you see to our sample user avatar http://i0.wp.com/www.krapinvaders.com/c ... r/user.png you will see that it is square. And if you look at one of yours http://www.krapinvaders.com/media/k2/users/Image32.jpg you will see that it isn't. And this is the reason why our look ok and your not. Try change your avatar to square.

Check settings of k2 plugin. It seems that it changes oryginal comments that uses gravatar for user pictures, to some kind of its own module.
And as Konrad mentioned - Your users uploads rectangle images instead of squared ones.