The problem accurs when i try to get the storys of the current users friends by using NewsFeedHandler.GetNewsFeed. This i what I do:

First I remove all previous storeys like this: 

int totalItems;

NewsFeedStoryCollection newsFeedStories2 = NewsFeedHandler.GetNewsFeed(DisplayUser, null, startTime, stopTime, 1, 200, out totalItems);

foreach (var storey in newsFeedStories2)
{
NewsFeedHandler.RemoveStory(storey);
}

 Then I  add a new story with an attachment to a friend of "displayuser"  like this:

var storyAttachments = new EntityCollection();
storyAttachments.Add(ForumHandler.GetTopic(587));
NewsFeedStory story =
new NewsFeedStory(NewsFeedHandler.GetAction(Web.Properties.Settings.Default.ActionForumTopicReply), testUser,
storyAttachments, ClubHandler.GetClub(26));
story.ActionDate = DateTime.Now;
NewsFeedStory storytest = NewsFeedHandler.AddStoryToActorFeed(story);
int id = storytest.ID; 

The last line returns an id of 1230.

Then I get all storeys for friends of "displayuser" like this:

NewsFeedHandler.GetNewsFeed(DisplayUser, null, startTime, stopTime, 1, 200, out totalItems);

The collection returned contains one story with the correct Club, but the id of the story is now 1233 and it does not have any attachments. If I get the story directly by using "NewsFeedHandler.GetStory(1230);" it returns the story with the correct club and attachment. 

Any help is appreciated,
Regards,
Mikael