Ok, I had already re sign-ed up another new account, and when it finished processing more then 24 hours later, i placed just a Default.aspx page into my account and tries to launch it again, but i am still having the prob of "This webpage is not available".
Since i did not touch any default files this time, is it possible that aspx pages can't work ATM due to some problems with mono?
Edit: If i place a index.htm file inside, it's working fine.