The HTML5 version is great, but I get booted off periodically, like every 20 minutes or so. Happens regardless of whether I'm at a table or playing against bots. I'm using Safari, which tells me the page was reloaded "because a problem occurred", but doesn't specify what error. When I open the browser console, there are a lot of errors listed, mostly complaints about cross-site scripting (likely related the ads), but none that seem fatal. Of course, once there's a fatal error I can't see it because it gets reloaded. This happens on the iPhone app too, which I assume uses most of the same technology.