Today I got this:

felipe@...2014...:~/devel/inkscape$ svn commit -m "improving SVG Fonts UI"
svn: Commit falhou (detalhes a seguir):
svn: MKACTIVITY de '/svnroot/inkscape/!svn/act/5b1d8b13-3340-4a3b-8ef3-377d14463b65': 403 Forbidden (https://inkscape.svn.sourceforge.net)

translating to english:

felipe@...2014...:~/devel/inkscape$ svn commit -m "improving SVG Fonts UI"
svn: Commit failed (details follow):
svn: MKACTIVITY from '/svnroot/inkscape/!svn/act/5b1d8b13-3340-4a3b-8ef3-377d14463b65': 403 Forbidden (https://inkscape.svn.sourceforge.net)