Hi Gene,
I'd did some tests Yesterday and the results were interesting. But limited only to index.html, since I am still verifying how the widgets will be loaded. I guess Your revision for homegenie.appcache will solve it. I'll test it tonight and repor the results here. By the way, You can look that the icon image used is the HG icon already included in the system.
Now I can fosused in X10 dimming, the event loggin issue and speed up the interface.
Grazie,
Marcus