At average: yes. Sometimes it can take longer. For example when they are updating some data/applications. Sometimes it happens that Analytics shows 0 visitors during the whole week, while it is normally around '200'. Well, it's not really a bug, it's just the data which isn't accessible..(GOogle updating,...)
Its not lik that.. Google analytics will show the result within 20 min.. That is also max time only.. Sometimes u can get the result within 2 min also..