Google Yesterday announced that it would show large number of results from same domain (Announcement is here: http://googlewebmastercentral.blogspot.com/2010/08/showing-more-results-from-domain.html). what you think is it good idea to have results of same site again and again? Well I think: No What about you?
sometimes it used to show 2 links from same domain sometimes. If the information is well organised and presented, it shouldn't be a problem.