Currently the server is under a massive DDoS attack from what it seems a bot network from Brasil.
I really can’t understand why someone would feel the need to put RIOT down, but as you can see we keep things under control and the server is up and running. We had to temporary remove version 0.3.0 beta from the server but in a short time version 0.3.1 will be released. People from Brasil may experience problems accesing the server, as we had to fight the attack.
The bottom line is – for the momment use the download mirrors, or wait a few days until I will release the new version.