I've noticed this a few times now, using both Chrome and Firefox, where I try to log into the forums and nothing happens. This can occur when using either the convenient form on top of the page or filling out the form presented after clicking the login link at the bottom of the page. It looks like there's a refresh and the login form is presented again. No errors or anything.
Request URL:http://www.datastax.com/support-forums/bb-login.php Request Method:POST Status Code:302 Found Request Headersview source Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Charset:ISO-8859-1,utf-8;q=0.7,*;q=0.3 Accept-Encoding:gzip,deflate,sdch Accept-Language:en-US,en;q=0.8 Cache-Control:max-age=0 Connection:keep-alive Content-Length:154 Content-Type:application/x-www-form-urlencoded Cookie:bbpress_logged_in_... Host:www.datastax.com Origin:http://www.datastax.com Referer:http://www.datastax.com/support-forums/topic/how-does-solr-re-indexing-get-triggered User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.163 Safari/535.19 Form Dataview URL encoded user_login:jas password:notmyrealpassword re: _wp_http_referer:/support-forums/topic/how-does-solr-re-indexing-get-triggered Submit:Log in » remember:1 Response Headers Cache-Control:no-cache, must-revalidate, max-age=0 Connection:Keep-Alive Content-Length:0 Content-Type:text/html; charset=UTF-8 Date:Fri, 27 Apr 2012 04:08:13 GMT Expires:Wed, 11 Jan 1984 05:00:00 GMT Last-Modified:Fri, 27 Apr 2012 04:08:13 GMT Location:/support-forums/topic/how-does-solr-re-indexing-get-triggered Pragma:no-cache Server:Apache/2.2
There are more cookies presented in the request than listed above. I can send them to you if needed, but I'm not sure how hijackable they are so I'm not posting them here. On the other hand, in the response, I did not omit anything. I don't see any session related cookies being set.