This has also happened to me. (Mac OSX 10.6.8 on a 2.4GHz mid-2010 MacBook Core 2 Duo) I tried registering here, using my Web-Browser, and THEN opening Zatikon (since registering from Zatikon did not work), but I still just get "Attempting to contact Server". (I am in North America and this was occuring around noon on a Week-Day.) I'll be deleting Zatikon.