Python error, only in the command window. Causes site to hang when loading

I receive this error when files are loading and sometimes after they have stopped loading. It only happens with this site, not with my other django sites. I can't make 开发者_Python百科any sense of this one. Can anyone tell me what's going wrong here?

Your server is too slow or it doesn't responds (networking problem, not a Python problem), that's what happens.

only in the command window

?

Too large an upload? Your front end interrupted the transfer somehow? Could be anything. We'll need more details to pin point the problem. Also, does this happen on your production setup?