I am wondering how to create new clean Eclipse workspace but having all settings from an existing one. Maybe something like cloning but without projects?
You can have a look at the following plugin : http://code.google.com/a/eclipselabs.org/p/workspacemechanic/
It's a plugin developed by google which lets you store your preferences and apply them to any workspace automatically.
If you store it in your dropbox (or any other shared storage), you'll be able to share you preferences between all your computers and even between all your team members.
It's the best and most reliable solution for your problem.