If you faced the following subversion message in windows:
svn: PROPFIND request failed on '/repos/demosystemeic' svn: PROPFIND of '/repos/demosystemeic': 503 Service Unavailable (http://x.x.x.x)
Probably the problem is caused because you are proxying your request via a proxy that doesn’t support HTTP methods like PROPFIND, etc.
If you don’t really need the proxy to access the repository edit the file
c:\Documents and Settings\_username_\Application Data\Subversion\servers (Note: Subversion directory is hidden)
and comment out the following items
NOTE: In linux the file is located at ~/.subversion/servers+