Nginx and cgit - upstream prematurely closed FastCGI stdout

[Lars]

I'm trying to setup cgit 0.10 with nginx 1.2.1-2.2 and fastcgi 1.0.3-3. 
Unfortunately the reponse is a 502. The following message is written in 
the error.log:

[error] 30956#0: *1 upstream prematurely closed FastCGI stdout while 
reading response header from upstream, client: **, server: **, request: 
"GET / HTTP/1.1", upstream: "fastcgi://unix:/var/run/fcgiwrap.socket:", 
host: "**"</i>


My nginx site is configured as follows:

    server {
       ...
       root /var/www/cgit/;
       proxy_redirect off;

       location ~* ^.+\.(css|png|ico)$ {
           expires 30d;
       }

       location / {
             include fastcgi_params;
             fastcgi_param  SCRIPT_FILENAME  /var/www/cgit;
             fastcgi_pass   unix:/var/run/fcgiwrap.socket;
             fastcgi_param    PATH_INFO $uri;
             fastcgi_param    QUERY_STRING  $args;
       }
}

Does anybody have an idea, what is going wrong? I also tried to raise 
the timeout limit, but I have no success.

Thanks!
snafu
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