how do I reduce the number of news links in Latest Headlines
How do I or can I set the number of news links shown in Latest Headlines
Hidden pref: extensions.liveclick.maxFeedItems
To open the about:config page, type about:config in the location (address) bar and press the Enter key, just like you type the url of a website to open a website. If you see a warning then you can confirm that you want to access that page.