I'm logged out at the moment. On every www.drownedinsound.com page the "you are being redirected" bit is showing where normally it's got the login/password box at the top. drownedinsound.com shows the login form as normal.
As an aside, is there a reason for sometimes using the subdomain and sometimes not? Apart from sometimes causing inconsistent problems like this, it's not particularly good practice and it'll hit your SEO rankings.