Hi All! I got exactly the same error with 1.8.0 on Windows 7 x64. I have already reverted back to 1.7.9, but here's what I've noticed: 1. I work with 2 different svn repositaries, one is private, I don't know what version of SVN is installed, but it works fine. The other one is https:// xp-dev.com/, and here I couldn't do anything - neither update\commit, nor checkout\show log. 2. I got different errors. I got error above when I tried to checkout. I got message that I'm in offline mode when I tried to update\commit. And when I tried to open repository browser, first I had to enter my login\pass (though they are stored), then I got also error above.
AFter I uninstalled 1.8.0 and installed 1.7.9, I didn't have to enter my login \pass. Worst thing is that new Visual SVN works only with 1.8.0, so I had to revert it back either.