http://sourceforge.net/tracker/index.php?func=detail&aid=1744455&group_id=175077&atid=871785



Multiple Cookies cannot be set from ASP.NET application because they are
replaced by function apr_table_setn.

Fix:

WorkerRequest.h, Line 542
virtual void SendKnownResponseHeader(int index, String* value)

if (index == HeaderContentType)
ap_set_content_type(rr, poolval);
else
if(index == HeaderSetCookie)
apr_table_addn(rr->headers_out, response_headers_name_c[index], poolval);
else
apr_table_setn(rr->headers_out, response_headers_name_c[index], poolval);