strange svn problem in eclipse

I have installed Subclipse inside my Eclipse. I can successfully connect to http://svn.python.org/projects/peps/trunk, but when I tried to connect to svn://svn/appwork.org/utils, I got an error saying:

No connection could be made because the target machine actively refused it. svn: Can't connect to host 'svn': No connection could be made because the target machine actively refused it.

Does anyone knows the answer to this question? Thanks a lot!

Edit I actually overlooked the error in the svn address. Even if I tried with "svn://svn.appwork.org/utils", I still got another error:

A socket operation was attempted to an unreachable host.  
svn: Can't connect to host 'svn.appwork.org': A开发者_Python百科 socket operation was attempted to an unreachable host.  

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You need svn://svn.appwork.org/utils instead of svn://svn/appwork.org/utils. With a dot, not slash.