nginx auto apeend "@@@Accept-Encoding:gzip" in request url

[Yu Sun]

some kind of problems happened at my nginx servers.
1.The error log shows like this:
2009/10/21 18:43:30 [error] 22636#0: *8345 open()
"//mnt/iscsi/che168www/file1/Upload/photo/small/20091021/80_60_514555811.jpg@@@Accept-Encoding:gzip"
failed
 (2: No such file or directory), client: 192.168.0.183, server:
file1.che168.com, request: "GET
/Upload/photo/small/20091021/80_60_514555811.jpg@@@Accept-Enc
oding:gzip HTTP/1.0", host: "file1.che168.com", referrer:
"http://www.che168.com/picture/564/bjf/184568.htm"
2009/10/21 18:43:52 [error] 22635#0: *8700 open()
"/mnt/iscsi/che168www/publish/zhuanti/i30china/index.php@@@Accept-Encoding:gzip"
failed (2: No such file or
 directory), client: 192.168.0.181, server: www.che168.com, request:
"GET /zhuanti/i30china/index.php@@@Accept-Encoding:gzip HTTP/1.0", host:
"www.che168.com
"

2.nginx version:
/usr/local/webserver/nginx/sbin/nginx -V
nginx version: nginx/0.8.20
built by gcc 4.1.2 20071124 (Red Hat 4.1.2-42)
configure arguments: --user=www --group=www
--prefix=/usr/local/webserver/nginx

3.and here is part of the configuration file:
 default_type  application/octet-stream;

  charset  gbk;

  server_names_hash_bucket_size 128;
  client_header_buffer_size 32k;
  large_client_header_buffers 4 32k;
  client_max_body_size 8m;

  sendfile on;
  tcp_nopush     on;

  keepalive_timeout 60;
  server_tokens off;

  access_log off;

  proxy_intercept_errors  on;
  proxy_redirect off;
  tcp_nodelay on;

  ssi on;
  #ssi_silent_errors on;
  ssi_types text/shtml text/plain application/x-javascript text/css
application/xml application/javascript;

  fastcgi_connect_timeout 300;
  fastcgi_send_timeout 300;
  fastcgi_read_timeout 300;
  fastcgi_buffer_size 64k;
  fastcgi_buffers 4 64k;
  fastcgi_busy_buffers_size 128k;
  fastcgi_temp_file_write_size 128k;

  gzip on;
  gzip_min_length  0k;
  gzip_buffers     8 32k;
  gzip_http_version 1.0;
  gzip_comp_level 9;
  gzip_types       text/plain application/x-javascript text/css
application/xml  application/javascript;
  gzip_vary on;
  gzip_proxied any;
  gzip_disable     "MSIE [1-6]\.";



4.we use squid(squid/3.0.STABLE15) in front of nginx servers.

5.the same problem exists in version 0.7.62


Is this a bug or just a misconfiguration error?
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