thanks for the information. I appreciate it.
Regarding the freeze on fast mouse clicks in FF: I think this is more of an exotic issue, because my mouse button is broken and produces fast double-clicks randomly. To be precise, bits of tobacco found their way into the mechanics :-)
I reverted to using angular's $location. Probably this approach will produce other problems on my way, but it works for the current state of our application. I will revisit kendo's navigation when $location falls apart for me.
Feature request: It would be great if Kendo UI Mobile would provide a built-in mechanism for the authorization scenario, which should be a common scenario. A simple redirection-callback somewhere on the Application would be great.
Sidenote: I tried to get hold of the Application's router. This turned out to be tricky because the router is created at a very late stage. I modified kendo's code to create it earlier and used the widget-creation event to get hold of it. But at the end using the Application's router didn't work either. The machinery was just not designed to support what I wanted.