XSession: login for is disabled

Hi,

I am new to Linux overall and I am running OpenSuse 13.1 with KDE as a workstation and today when I tried to login with my default user (not root) I keep receiving this message on the title of the post.

Right now I am logged in as root to post this message, but I wouldn't want to keep working as it is. Can anyone help me with this issue please? I've looked around the forum and the only related post is regarding the same issue but logging in as root, which is not my case.

Thanks.