I have 3 frames.

Well, I solved this problem on my own.

Frame fragments are correctly shown in browser.

However I've spotted serious bug with navigation into/out from child nested frames when AllowNestedFrameNavigation is set for more than a single frame.

Could you please confirm that this indeed a bug (and that RTM will be free of it as navigation functionality is paramount to our project) or maybe this this is rather my misuse of uri mapping with nested frames?

Can I send test project by email? Perhaps you'll be able to correct code or even use it for bug hunting. Please write me on email directly. I'm demoing on Monday.

P.S. I can't attach it directly here as it is already contains some "not-for-public" pieces.

P.P.S. I'm also observing the behavior desribed here and it really looks weird. Hope this will be fixed along with deep navigation issues I've outlined before.