For a beta, sure no problem, but to me it looks like this issue doesn't get that much love from the developer(s).
The main problem (according to me) is that loading the main page results in > 200 requests for different content.
On a personal note; using Telldus gadgets, restarting the HG service will result in every lamp in the house being "on" and me clicking through the UI to set them to "off". Also, when at work I rely on the web interface, remoting to the server to restart the service is a bit of a hurdle.
Anyway, r520 is stable for me now, thanks, as long as I don't try to browse to it and change things.