By default, XP caches negative entries for five minutes. Negative entries are those in which no match was found, and you end up getting a "Cannot find server or DNS" error in your browser.After five minutes, they're cleared from your cache. But if you'd like, you can force XP not to cache these negative entries so that you'll never run into this problem. Run the Registry Editor and go to the following key: HKEY_LOCAL_MACHINE\ SYSTEM \CurrentControlSet\Services\Dnscache\Parameters. Create a new DWORD value with the name NegativeCacheTime and give it a value of 0.
The DWORD determines how much time, in seconds, to keep negative entries in the DNS cache. If you like, you can have the entries stay alive for one second by giving the DWORD a value of 1.After you're
done editing, exit the Registry. To make the change take effect, restart your computer, or flush your cache by issuing the command ipconfig /flushdns at a command prompt.
You can also use the Registry to control the amount of time positive entries are kept in the DNS cache. By default, they are kept for 24 hours. To change the default, go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dnscache\Parameter
again and create a DWORD value called MaxCacheEntryTtlLimit. (If it's already present, just
edit the value.) For the value, enter the amount of time you want the entry to remain, in seconds, making sure to use Decimal as the base.
"Windows XP Tips: Tune Your Browsing-Tricks on DNS"
twitter tips,twitter tricks,twitter tips and tricks,twitter latest updates,facebook tips and tricks,facebook tricks,facebook tips,Windows 7 Tips,Windows 7 tips and tricks,Windows 7 tips with staps,Windows XP Tips,Windows XP tips and tricks,Windows XP tips with staps
Reference : techpraveen.com