hi all
nginx debug log the following problems,please help me

# nginx config
user www www;
worker_processes 8;
worker_cpu_affinity 00000001 00000010 00000100 00001000 00010000 00100000 01000000 10000000;
worker_rlimit_nofile 65535;

#error_log /var/log/nginx_error.log crit;
error_log /var/log/nginx_error.log debug;

pid /var/run/nginx.pid;

events {
worker_connections 65535;
use epoll;
}

http {
include /etc/nginx/mime.types;
default_type application/octet-stream;

sendfile on;
tcp_nopush on;
tcp_nodelay on;
server_tokens off;
charset utf8;

server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
client_max_body_size 150m;

gzip on;
gzip_comp_level 2;
gzip_min_length 1024;
gzip_buffers 4 16k;
gzip_http_version 1.0;
gzip_types text/plain application/x-javascript text/css application/xml;
gzip_vary on;

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;
proxy_intercept_errors on;
proxy_ignore_client_abort on;
fastcgi_intercept_errors on;

keepalive_timeout 120;
limit_zone one $binary_remote_addr 10m;

include /etc/nginx/conf.d/*.conf;

error_log /var/log/nginx_error.log debug;

# tail -f /var/log/nginx_error.log

2011/09/08 15:38:10 [info] 19178#0: *5713577 client 112.64.188.183 closed keepalive connection (104: Connection reset by peer)
2011/09/08 15:39:42 [info] 19175#0: *5729670 client 112.64.188.183 closed keepalive connection (104: Connection reset by peer)
2011/09/08 15:44:10 [info] 19257#0: *1382 client closed prematurely connection while sending response to client, client: 112.64.188.183, server: static.test.com, request: "GET /apk/48/48598/com.dolphin.browser.cn.apk HTTP/1.1", host: "static.test.com"
2011/09/08 15:45:06 [info] 19261#0: *2100 client 112.64.188.183 closed keepalive connection (104: Connection reset by peer)