If you want the newsfeed component (the newsfeed box's) content to have it's own scrollbar so the user doesn't have to scroll the entire page, you can add this CSS code to your theme at yoursite.com/admin/theme/css:

    .ow_newsfeed{
        overflow-y: auto;
        height: 1000px; /* Note: This will change the height of the newsfeed box */
    }

Then hit 'Save' and it applies. However, this will make it give every newsfeed box on your site a scroll bar. If you want the scroll bar to only be visible on the /index page for example, go to yoursite.com/index/customize and drag a new 'Text/HTML' block anywhere. Then click the 'pencil' icon, and add the following code:

    <style>
        .ow_newsfeed{
            overflow-y: auto;
            height: 1000px; /* Remember to change this to your preferred height */
        }
    </style>

Save the code, then click 'Finish Customizing.' This will now make the newsfeed block on yoursite.com/index to have the scroll bar only while the newsfeed boxes on the profiles/groups will not have the scrollbar.

Hope this helps!
~Jake,
Head of Developments
www.ewtnet.us

thanl you jake

this workd perfectly however ild also like to know if i can apply a read more otion to every user that post a loong status.

what software version do you have?

hey ross i am using 1.7.0

update your software to 1.7.1 there's see more feature in there for the newsfeed status. 

i seee thanks

No problem.