Hi,
today I experienced the problem again after unplugging the 5V power supply from the USB switch.
But also found out that unplugging and replugging the z-wave controller after 10 seconds, the web interface started suddenly to work again.
So I am assuming that there's something in the z-wave driver that cause this (or at least that can be optimized to detect this kind of failure).
Can any of you confirm that?
Cheers,
g.