Проблеме при аплоде файлов

[mFF]

фронтэнд nginx/0.4.0 бэкэнд apache+php
на бэкэнде PHPBB+attachment_mod

Добавление аттачмента заканчивается Gateway Timeout
в конфиге nginx

    server {
        listen  195.218.239.38:8787;
        server_name board.digitalxpert.ru;

        ssl on;
        ssl_certificate /usr/local/etc/nginx/ssl/board.crt;
        ssl_certificate_key /usr/local/etc/nginx/ssl/board.key;
        ssl_ciphers 
ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP:+eNULL;

        access_log /var/log/nginx/board-access.log;
        error_log /var/log/nginx/board-error.log error;

        location / {
        proxy_pass https://board.digitalxpert.ru:8787/;
        proxy_redirect default;
        }
    }

в логах


2006/09/05 18:49:03 [error] 96679#0: *72 upstream timed out (60: 
Operation timed out) while reading response header from upstream, 
client: 194.44.157.63, server: board.digitalxpert.ru, URL: 
"/phpBB2/posting.php", upstream: 
"https://192.168.0.5:8787/phpBB2/posting.php", host: 
"board.digitalxpert.ru:8787", referrer: 
"https://board.digitalxpert.ru:8787/phpBB2/posting.php?mode=newtopic&f=2"

Дебаг лог в аттаче

-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: board-error.log
URL: <http://nginx.org/pipermail/nginx-ru/attachments/20060905/8e588a34/attachment.ksh>