[twitter-dev] Inconsistent responses for particular users -- data for users/show, but Not found for statuses/friends

[Josh Bleecher Snyder]

Hi,

I'm getting what look like inconsistent responses from the API for a
particular small handful of users. I'm sure I'm doing something
stupid, but I can't figure out what; any insight would be appreciated.
Here is a sample pair of problematic calls/responses:

curl "http://api.twitter.com/1/users/show.json?screen_name=johncow";
{"profile_background_image_url":"http://a3.twimg.com/profile_background_images/32506867/johncow1280x960.jpg","description":"Blogger,
SEO, PPC & Social Media Marketer, Software Developer, Mentor, Family
Man, Freak & 
Christian!","friends_count":101,"profile_link_color":"0000ff","status":{"in_reply_to_status_id":null,"truncated":false,"created_at":"Wed
Feb 24 13:40:54 +0000
2010","in_reply_to_user_id":null,"source":"web","favorited":false,"in_reply_to_screen_name":null,"id":9575982473,"text":"ok,
enough of my ramble on
http://bit.ly/974IBY"},"statuses_count":2280,"profile_background_tile":false,"created_at":"Thu
Jan 10 20:28:50 +0000
2008","favourites_count":0,"profile_background_color":"FFFFFF","contributors_enabled":false,"profile_image_url":"http://a1.twimg.com/profile_images/715616398/6531_138428637906_616647906_3253838_680520_n_normal.jpg","geo_enabled":false,"profile_sidebar_fill_color":"e0ff92","lang":"en","notifications":false,"screen_name":"johncow","following":false,"verified":false,"time_zone":"Eastern
Time (US & 
Canada)","profile_sidebar_border_color":"87bc44","protected":false,"location":"Sault
Ste Marie, Canada","name":"Jason
Katzenback","id":12084472,"utc_offset":-18000,"profile_text_color":"000000","followers_count":13245,"url":"http://www.johncow.com"}

So johncow exists, has friends, etc. But:

curl "http://api.twitter.com/1/statuses/friends.json?screen_name=johncow";
{"request":"/1/statuses/friends.json?screen_name=johncow","error":"Not found"}

Any vision into what I've screwed up?

Thanks,
Josh