svn trunk update not working

I have wp2.5 RC1 installed (via svn) and wish to upgrade to v.2.5 gold.

However update via SVN client shows following errors:

Error: PROPFIND request failed on ‘/wordpress/trunk’

Error: PROPFIND of ‘/wordpress/trunk’: Could not resolve hostname `svn.automattic.com’: The requested name is valid and was found in the database, but it does not have the correct associated data being resolved for. (http://svn.automattic.com)

When I direct Firefox to http://svn.automattic.com
I also observe host not found.

I can access http://www.automattic.com

thanks.

P.S. I could not locate a forum to report this issue at automattic.com so reporting here.

Woody