zend feed issue?

i am having a lot of trouble getting zend feed rss to consume some feeds.

neither my code nor the sample on the wiki that imports slashdot works for me.

i tried the demo app at: http://andries.systray.be/zf-demos/feed-reader/feed/browse, and was not able to get the feeds to load either.  

http://maine.craigslist.org/web/index.rss is the feed i am trying to load.  

also, fyi, i loaded this feed with the http client with no problem, and was able to load it into a simplexml object.