Problem using search.xml - Strange response

[Neil]

Trying to access search.xml via PHP - was working fine until a few minutes ago, then started giving me a response I can't make sense of.

Again - I've made no changes to my code since it worked properly, it's the response that has changed.

Using cURL, I tried the following endpoint:

http://www.goodreads.com/search.xml?k...

Suddenly, the response has changed to:

SimpleXMLElement Object
(
[body:] => You are being .
)

...and that's it. I don't get anything else. Can someone point me in the right direction?