problem in using tiles with spring...

Hi!

while using tiles along with spring 3, i m getting following error:

java.net.UnknownHostException: tiles.apache.org

program runs fine when internet connection remains 'on' otherwise it shows above error.

can anyone provides me any hint ?

Thanks...

the problem was occurring due to very silly mistake that i missed the "space" between "Apache Software Foundation" in :

<!DOCTYPE tiles-definitions PUBLIC "-//Apache Software Foundation//DTD Tiles Configuration 2.1//EN" "http://tiles.apache.org/dtds/tiles-config_2_1.dtd">