i have downloaded World of Minecraft 1.6.6, i then downloaded World of Minecraft 1.7.3, i then downloaded World of Minecraft 1.7.5, i downloaded the 1.7.5 in the same way. i go on World of Minecraft and it comes up with the login screen, i login and click 'sign in'. nothing happens ever. i use 1.7.3 again but the server i normally go on has a constant neverending connecting... thing at the start, i tested another server and it seemed to work, i need help, what is happening?