Crashing may be a memory issue. As you click around,the framework loads the new page with Ajax and adds it to the DOM. We haven't yet implemented a system to only hold X pages in the DOM and dump older ones to keep things tidy. So if you click around, the page will eventually get pretty large.

For now, you can add a rel="external" to links. This tells the framework to do a full page reload and will give you a fresh start. Might make sense to add this to certain links to ensure that the DOM is cleaned up periodically.