what do the two lights on NM tray icon mean?

["Forrest Sheng Bao" <forrest bao gmail com>]

Hi,

There are two lights on NM tray icon when trying to connect to a network. One is at the bottom left corner of the icon. Another is at the top right of the icon. And there is a stuff circulating among those two. Generally the bottom left one turns to green before the top right one. After the connection is established, this icon turns back to a status icon. Can someone tell what do those two lights mean?

Thanks,
Forrest
-- 
Forrest Sheng Bao
Ph.D. student, Dept. of Computer Science
M.Sc. student, Dept. of Electrical & Computer Engineering
Texas Tech University, USA
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