Every time i even click on SK this error comes up. It doesn't even reach the login page.It was working fine then it started fail to connect to server and now this! Does anyone know how to fix this plz!

this is the message that comes up:

The application has failed to launch due to the following
error:
Server returned HTTP response code: 503 for URL: http:
//download.threerings.
net/spiral/201106021524949/getdown.txt

Is it some update or something? Is it happening to everyone? or is there just something wrong with my SK file?