On Sat, Apr 12, 2008, Anil Saini wrote: > > actually sir i have one more proxy that has even more users and its working > fine > it also has internal dns option disabled.... > > so its not the problem of internal dns options i think > i think its overloading of DNS requests The dnsserver stuff by itself isn't all that -bad-, it just scales poorly if the DNS servers can't keep up for some reason. The internal DNS code handles slow DNS servers more gracefully - ie, more requests can be queued and the clients just perceive it as slowness (to a point!). Yes, you should probably investigate your DNS server setup to make sure that things are running properly but my suggestion still stands - drop back to internal DNS rather than the dnsserver helper based external DNS code. Adrian -- - Xenion - http://www.xenion.com.au/ - VPS Hosting - Commercial Squid Support - - $25/pm entry-level VPSes w/ capped bandwidth charges available in WA -