The help entry has been a little hard to locate through the Help
Center, but it's easy to find from the interface... at the bottom of
the screen is your entry that looks something like this:
"This account is open in 1 other location (X.X.X.X). Last account
activity: 0 minutes ago. Details"
Clicking Details brings up the details, and there's a Help link from
there which reads:
"http://mail.google.com/support/bin/answer.py?ctx=%67mail&answer=45938"
--
Laurence J. Peter - "Every man serves a useful purpose: A miser, for
example, makes a wonderful ancestor."