[Seaside] Seaside sessions and ajax

[sig]

Hello there,

i having few questions about how seaside handling ajax update requests.

I found that it handles differently, not like a regular page navigation.
For instance - continuation is not changing.

And i have a problem with sessions: when session expires, by default
we redirect page to show login page. But with ajax its just returns an
empty result, rendering updated page parts empty. How i can handle
session expiration with ajax correctly?

Also, i would like to make continuations updating for ajax, so any
user action regardless ajaxed or not with have new continuation id.
How this can be done?

Regard,
Igor