Sometimes i get this warning message on my wp site:
Warning: file_get_contents(http://twitter.com/users/show.xml?screen_name=): failed to open stream: HTTP request failed! HTTP/1.0 400 Bad Request in //wp-content/plugins/social-impact-impact-widget/social-impact-widget.php on line 528
when i reload the page, it usualy goes away.
google shows some other sites having this problem,
any ideas what could be the reason for this problem?