Image Upload Problem

[Nick Weisser]

I'm having issues with simple image uploads in Magento admin area und 
PHP 5.2.6 using FastCGI:

2009/04/21 07:44:33 [notice] 29743#0: *14130 "^(.*)$" matches 
"/index.php/admin/catalog_product_gallery/upload/key/ffabc43d7bd4801b5a9567478d1ab383/", 
client: 83.78.55.148, server: nginx.openstream.ch, request: "POST 
/index.php/admin/catalog_product_gallery/upload/key/ffabc43d7bd4801b5a9567478d1ab383/?SID=6210c384a327fd6a23e455332615e210 
HTTP/1.1", host: "nginx.openstream.ch"
2009/04/21 07:44:33 [notice] 29743#0: *14130 rewritten data: 
"/index.php", args: "SID=6210c384a327fd6a23e455332615e210", client: 
83.78.55.148, server: nginx.openstream.ch, request: "POST 
/index.php/admin/catalog_product_gallery/upload/key/ffabc43d7bd4801b5a9567478d1ab383/?SID=6210c384a327fd6a23e455332615e210 
HTTP/1.1", host: "nginx.openstream.ch"
2009/04/21 07:44:33 [warn] 29743#0: *14130 a client request body is 
buffered to a temporary file 
/usr/local/nginx/client_body_temp/0000000013, client: 83.78.55.148, 
server: nginx.openstream.ch, request: "POST 
/index.php/admin/catalog_product_gallery/upload/key/ffabc43d7bd4801b5a9567478d1ab383/?SID=6210c384a327fd6a23e455332615e210 
HTTP/1.1", host: "nginx.openstream.ch"

I tried different file sizes as small as 2kb, but nothing seems to work.

This is my PHP config: http://nginx.openstream.ch/phpinfo.php
-- 
Nick Weisser

Magento Associate Partner
osCommerce Team Member

Openstream Internet Solutions
Wieslergasse 6
CH-8049 Zürich

Phone  +41 44 500 78 78
Fax    +41 44 500 78 79
Skype  nick.weisser
Web    http://www.openstream.ch