show_users down?

[Jesse Stay]

I'm getting the "something is technically wrong" error when loading  
show_users right now when I try to authenticate it with any username  
but the user themselves - is something going on?:

http://twitter.com/users/show/guykawasaki.json

What's even odder is that it's returning plain HTML as the error and  
not JSON or XML as expected, which is breaking my app.

Thanks,

Jesse