Delphi - Błąd HTTP 500 przy logowaniu i pobieraniu pliku metodą POST

Cytat:

Nagłówki żądania

Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding:gzip, deflate
Accept-Language:pl,en-us;q=0.7,en;q=0.3
Connection:keep-alive
Host:jakasstrona.pl
Referer:http://jakasstrona.pl/auth
User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0) Gecko/20100101 Firefox/10.0

Nagłówki odpowiedzi

Cache-Control:no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Connection:Keep-Alive
Content-Encoding:gzip
Content-Length:20
Content-Type:text/html; charset=UTF-8
Date:Tue, 04 Dec 2012 10:33:51 GMT
Expires:Thu, 19 Nov 1981 08:52:00 GMT
Keep-Alive:timeout=15, max=100
Location:/Pragma:no-cache
Server:Apache/2.2.16 (Debian)
Vary:Accept-Encoding
X-Powered-By:PHP/5.3.3-7+squeeze3