I ve got one big problem with K2 and adding new items. From my IP, my user, everything is ok, but my co-workers can't add any item. They are logged in back end like administrators and adding new posts, but everytime, when they are trying to save the article, whole pages are down. Sometimes the ERROR 101 is showed (ERR_CONNECTION_RESET). It happens only to my co-workers, not to me. I really don't know, where the problem is. Hope anyone can help.

Thank you