The solutions listed here didn't work for me, but bobbogo's answer put me in the right area.
Mostly in ~ / .subversion / servers I found the following
[global] http-proxy-host= www-my-repo-address.com
I donโt know how it happened. Cornorstone is installed on the machine, perhaps it changed it (but this is an assumption).
After the http-proxy-host parameter was commented out, the problem was resolved and the code could be verified. i.e.
[global]
Note. I ran into this problem with both svn 1.7 and 1.9
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