search API not working with 'refresh' and since_id does not return results? Broken?

[burton]

Running this request:

http://search.twitter.com/search.atom?q=linux

and then fetching the 'refresh' link doesn't work.

http://search.twitter.com/search.atom?q=linux&since_id=2011153563

Is this broken?

The documentation seems to hint that I can use this to fetch more
content after this item.

Perhaps the documentation is stale or this feature was removed?