I was testing it but it is offline now. It seems to be related with some open social feature that is being blocked by google sites for security reasons. I'm not sure if it is directly related to nabble. Maybe I'm wrong. I need to test it more. I'll do it when it is back online.
If you try www.brywoodpta.com/forum you get 404 but if you try www.brywoodpta.com you get a site that refreshes itself so fast that it never loads.
I guess the refreshing issue isn't really related to Nabble.