I posted about this a coppola muntz ago, and somebunny recommended MacStumbler as a way to get to the bottom of this, but no joy.
Austin is a pretty well-wired city [I dunno how it compares to others, I'm not a Road Warrior], w/ WiFi hotspots all over the place. All Austin Public Library branches provide 24/7 open WiFi networks, as do many of the Hospitals and Courthouses. There are even WiFi hotspots in places like a Bar and a Burger King right near The University [UT].
I connect automagically at all the Libraries, the Hospital, and the Courthouse, at many restaurants, and at Whole Foods Market headquarters; if I've been there beef-ore, it just connects after bootup, and if it's a location new to me, it presents me w/ a dialog box that states,
'None of your Trusted Networks are available. Would you like to connect to the Open Wireless Network [insert network name here]?
There are a few locations at which I am offered that option [to which I respond by clicking 'Yes' or OK', I forget which] and then nothing at all happens. No connection, no error msg, no dark bands on the 'baseball diamond'.
Sometimes, only sometimes, if I wait long enough, I am presented w/ a msg stating, 'There was a problem connecting to [insert network name here]', but no other info whatsoever.
MacStumbler has proven to be No Help At All, except to display ALL wifi networks in the vicinity, most of them WEP-protected, and to inform me of the relative Signal Strength of each network.
Are there some WiFi routers that just don't work w/ Macs, or some config option that is set in such a way as to prevent OS-X from connecting?
EnnyBuddy have a clue as to what's going on in these cases [or suggestions for how to figure out this puzzle]?
TIA,
Kbeartx