detecting wireless vs wired?

["Dan Kirkwood" <dangogh gmail com>]

How does NetworkManager detect whether a connection is wired vs
wireless?  I updated my FC5 system last night, and now NetworkManager
shows my wireless card as wired -- if I click on the NetworkManager
icon,  I see my normal wired network connection (disabled) and my
wireless as "Wired Network (Broadcom Corporation BCM4306 802.11b/g
Wireless LAN Controller)".

It connects to my home network,  but no longer shows available
wireless networks..  (it did yesterday..)  I'm running on a Dell
Inspiron 5150, FC5 (2.6.16-1.2111_FC5 kernel), NetworkManager 0.6.2.
I've looked for docs, but was not able to find anything relevant.
Suggestions welcome.   Thanks!