The same is happening to me, did you solve it?
~/telegram $ ./TelegramGui Telegram-client version 0.01-beta, Copyright (C) 2013 Vitaly Valtman Telegram-client comes with ABSOLUTELY NO WARRANTY; for details type `show_license'. This is free software, and you are welcome to redistribute it under certain conditions; type `show_license' for details. *** Connect with 31.210.235.12:443 timeout *** Can not create connection to DC. Is network down? ~/telegram $