For quite awhile I've noticed that the lightbulbs indicating new activity since my last visit sometimes vanish while I'm in the middle of going down the list. I think I've figured out what's causing it. If at any point, I click on an embedded link, a second session on my PC is opened as the active window. When I close that session, the original link or window - with Firehouse has lost any remaining bulbs that were lit. Is this a problem with Explorer - considering the cookie is on the PC, or is this a problem with the board since the original session was never terminated?