Currently Being ModeratedMay 4, 2012 1:02 PM (in response to KentRS)
I think the answer to this is if you have "Block all incoming connections" checked, then "Enable stealth mode" in Sys Prefs is checked but greyed out. Mine is set up that way and I'm seeing, like you, that Stealth Mode is off in System Profiler>Network>Firewall. If you have "Block all incoming" checked, then activating Stealth Mode becomes moot.
I can only get it undimmed if I uncheck Block all incoming.
Currently Being ModeratedMay 5, 2012 2:44 AM (in response to KentRS)
Thanks for your input, which is much appreciated. After I had posted my question I managed to find a couple of other discussions that suggest this is a fault with the product i.e. showing stealth mode is on in System Preferences, but off in the Profile. The discussion I found suggests it is actually switched on. I had also decided to block all incoming connections, so it is encouraging to see that we have all come to the same conclusion. Thanks again.