[Squid]dnsserver timeout??

Linpus Linux+Squid.2.8.STABLE8
只配置了基本运行的squid.conf
http_port 8080
cache_mem 32 MB
visile_hostname jolon
cache_vary off
cache_swap_low 90
cache_swap_high 95
maximum_object_size 4096 KB
maximum_object_size_in_memory 8 KB
ipcache_size 1024
ipcache_high 95
ipcache_low 90
cache_dir ufs /cache1 256 16 256
cache_dir ufs /cache2 256 16 256
cache_access_log none
cache_log none
cache_store_log none
forwarded_for off
cache_dns_program /usr/lib/squid/dnsserver
dns_nameservers *.*.*.*
acl all src 0.0.0.0/0.0.0.0
http_access allow all
cache_effective_user nobody
cache_effective_group nobody
30左右客户端，运行2小时左右网页无法打开，一段时间后显示 dnsserver timeout
请问这是什么故障引起的问题？
人数少时这种故障不会发生。　　　　　　

dns_nameservers *.*.*.*
这样定义不对, 需要指定一个合适的dns　　　　　　

这个地址是明确的，我用*号代替了。202.101.172.35

还需要我在squid.conf中强调DNS超时概念吗？我在squid.org也翻阅了FAQ，GOOGLE一下午，还是很困惑。人少用没问题，30多人，就开始不停的断线。

请问前辈，查看系统日志能查出原因吗？那具体应该查阅哪类型日志？　　　　　　

我不会,顶一下,呵　　　　　　

更换Redhat9.0+squid2.6.8
在默认的squid.conf基础上修改配置
squid为2.6.8版本，未列出项目为squid.conf.default默认配置：[/SIZE][/FONT]
http_port 8080[/SIZE][/FONT]
error_directory /opt/squid-2.6.STABLE8/errors/Simplify_Chinese[/SIZE][/FONT]
dns_nameservers *.*.*.* *.*.*.*[/SIZE][/FONT]
acl QUERY urlpath_regex -i \.cgi-bin$ \.php$ \.cgi$ \.avi$ \.wmv$ \.rm$ \.ram$ \.mpg$ \.mpeg$ \.zip$ \.exe$ \.mp3$[/SIZE][/FONT]
cache deny QUERY[/SIZE][/FONT]
cache_mem 60 MB[/SIZE][/FONT]
cache_swap_low 90[/SIZE][/FONT]
cache_swap_high 90[/SIZE][/FONT]
ipcache_size 1024[/SIZE][/FONT]
ipcache_low 90[/SIZE][/FONT]
ipcache_high 95[/SIZE][/FONT]
cache_dir ufs /usr/local/squid/var/cache 5000 16 256[/SIZE][/FONT]
access_log /usr/local/squid/var/logs/access.log squid[/SIZE][/FONT]
auth_param basic program /usr/local/squid/sbin/ncsa_auth /usr/local/squid/password[/SIZE][/FONT]
auth_param basic children 5[/SIZE][/FONT]
auth_param basic realm Jolon Http Proxy Server[/SIZE][/FONT]
auth_param basic credentialsttl 2 hours[/SIZE][/FONT]
auth_param basic casesensitive on[/SIZE][/FONT]
refresh_pattern -i \.*$ 1440 50% 2880[/SIZE][/FONT]
acl all src 0.0.0.0/0[/SIZE][/FONT]
acl manager proto cache_object[/SIZE][/FONT]
acl localhost src 127.0.0.1/32[/SIZE][/FONT]
acl to_localhost src 127.0.0.0/8[/SIZE][/FONT]
acl SSL_ports port 443[/SIZE][/FONT]
acl Safe_ports port 80[/SIZE][/FONT]
acl Safe_ports port 443[/SIZE][/FONT]
acl CONNECT method CONNECT[/SIZE][/FONT]
acl lan src 192.168.0.0/24[/SIZE][/FONT]
acl qqusers arp "/usr/local/squid/qqusers_mac"[/SIZE][/FONT]
acl advance arp "/usr/local/squid/advance_mac"[/SIZE][/FONT]
acl normal proxy_auth REQUIRED[/SIZE][/FONT]
acl companyaddr dst *.*.*.*[/SIZE][/FONT]
acl mmxfile urlpath_regex -i \.mp3$ \.avi$ \.rm$ \.ram$ \.rmvb$ \.mpg$ \.mpeg$ \.zip$ \.exe$ \.rar$ \.wmv$ \.wma$ \.3gp$[/SIZE][/FONT]
acl conncount maxconn10[/SIZE][/FONT]
acl qqip dst "/usr/local/squid/qq_ip"[/SIZE][/FONT]
acl deniesites url_regex -i "/usr/local/squid/deniesites"[/SIZE][/FONT]
http_access deny conncount all[/SIZE][/FONT]
http_access deny deniesites all[/SIZE][/FONT]
http_access deny mmxfile all[/SIZE][/FONT]
http_access allow companyaddr all[/SIZE][/FONT]
http_access allow qqusers[/SIZE][/FONT]
http_access deny qqip all[/SIZE][/FONT]
http_access allow advance[/SIZE][/FONT]
http_access allow normal[/SIZE][/FONT]
http_access allow manager localhost[/SIZE][/FONT]
http_access deny manager[/SIZE][/FONT]
http_access deny !Safe_ports[/SIZE][/FONT]
http_access deny CONNECT !SSL_ports[/SIZE][/FONT]
http_access deny to_localhost[/SIZE][/FONT]

[/SIZE][/FONT]
http_reply_access allow all[/SIZE][/FONT]

cache_effective_user squid[/SIZE][/FONT]
cache_effective_group squid[/SIZE][/FONT]
visible_hostname proxyserver[/SIZE][/FONT]
结束，在这里设置中：[/SIZE][/FONT]
qqusers>advance>normal[/SIZE][/FONT]　　　　　　

部分网站图片无法显示；
尝试更改refresh_pattern项\dns_children 进程数量再看