Pssssssst are you logged in at work and at home?
The board doesn't know which computer you are on. It just sees the login info and grabs the new stuff from the last time it saw the login info. So if you log in at work at 12:00, then log in at home at 12:30, you'll only see the new stuff from 12-12:30 at home.
And since most people have the board set to autologin and their computers set to save the username/password, you don't even remember you are logged in.
Wait I thought you were talking about talkbass, but I think now you mean google itself. Same idea, you log in with google.....you may have done it months ago and forgotten, but if you go to google.com to my account I bet you're logged in
