Failed to install script

when I try to install a script this is the error I get:
"Failed to install script: Download of http://prdownloads.sourceforge.net/squirrelmail/squirrelmail-1.4.9a.tar.gz failed : Failed to lookup IP address for prdownloads.sourceforge.net"

when I ping prdownloads.sourceforge.net in an xterm, everything is fine.

I have installed scripts before without a problem.

what do I do wrong?

nobody help me?

argggggg i buy de virtual pro

helpe mee pleaseeeeeeee!

SOLVED:

restart webmin after you change /etc/resolv.conf