I've noticed this too but I do not really have to do a full
Login again, just click in the login link and I'm in (if the
session is still alive). But as Alison says, it happens everytime I
navigate away from the site.
Do you mean each time you use the browser history or type
http://p2pu.orgto go back to the site? It is not possible to access
the session cookie
with http anymore so all http URLs will look as if the user is not logged