Wow. This is getting very interesting. Thanks good Sirs. Nokia didn't specify about MicroB property but I'm pretty sure MicroB is closed-source as a property of Nokia. Maybe here's an answer to the sandboxing idea (again, maybe): http://browser.garage.maemo.org/docs/build_howto.html White paper of MicroB showing internal architecture: http://browser.garage.maemo.org/docs/browser_paper.html Lemme know it this helped you.