Meanwhile you can use ownCloud - http://owncloud.org/ http://owncloud.org/ Still not perfect, little bit more work needed to install the server part, but it wo

Meanwhile you can use ownCloud - http://owncloud.org/ http://owncloud.org/ Still not perfect, little bit more work needed to install the server part, but it works, is opensource, you can access your files over web browser (mobile apps on the way), new versions ship regularly and as a bonus the sync client apps are written c++/Qt so no annoying java required.