Wrong "post author"

Hi webmaster, when I open a new topic in th eforum, the overview shows the wrong author. In this case "Gianluca", see http://www.8a.nu/forum/Index.aspx?ObjectClass=CLS_ForumDr8a&CountryCode=GLOBAL the topic "Elbow pain: bursitis?". There seems to be some sort of ID issue ... Ciao dreamingof8a