The same page with the same template takes 0.4/0.5 seconds more if you are a logged user.
For an unlogged user the whole page tales 0.2 sec and it uses the database more than identity may need. You can see that if I'm online : http://dade.ath.cx:8080/ refreshing many times and logging with "foo"/"bar" (Powerbook G4 1ghz, sqlite database)
