Connecting to Facebook is about to get a bit slower for the site's millions of users, but there's a good reason.
Facebook is in the process of moving all of its users in North America to a type of internet connection that's not as fast, but more secure.
By default, you'll soon start using an H-T-T-P-S connection, as opposed to the less-secure H-T-T-P.
Most retail and banking sites use H-T-T-P-S.
Facebook says it has made infrastructure improvements so the transition will slow down connections only slightly.