Glenda,
The usual cause of this problem is that the forum system thinks you've left the site when it hasn't heard from you for over 20 minutes, so it automatically logs you out. (Even though you might be typing a post, the forum system doesn't hear from you until you click
Preview Post or
Submit Reply.)
The solution is to check the
Remember Me? checkbox when you are logging into the forums. This tells the forum system that you shouldn't be auto-logged out. You can still log out by clicking the
Log Out button.
The purpose of the auto-logout feature is to prevent someone else from using your Marrowforums account if you leave it logged it on a public computer. If it's your own personal computer then you don't want this feature, so check
Remember Me? once and it should work the way you want from now on. If you are already logged in right now, click
Log Out and then check
Remember Me? as you log back in.
There are more details about this issue in a
previous Site Comments thread.