Limit on number of APs? Some way to force-rescan?

[Derek Atkins <warlord MIT EDU>]

I'm sitting here in the IETF, and from where I sit I can hear at least
15 Access Points, some A, some B/G.  I get this number by manually
running "iwlist ath0 scan" and looking at the results.  I see
"three" ESSIDS:

[warlord cliodev ~]$ iwlist ath0 scan | grep ESSID | sort -u
                    ESSID:""
                    ESSID:"IETF66A"
                    ESSID:"IETF66B"

However, nm-applet is only showing IETF66B, and wont let me connect to
IETF66A, even when I tell it to by "Connect to other wireless
network".

Now, going back to my scan-list, the IETF66A network doesn't show
up until "Cell 10" in my scan list.   Is there some limit to the
number of returns from a scan?  Does NM stop looking after some
point?

Right now I can't figure out how to tell it to connect to the A
network.  I can see it's there, but NM doesn't see it.  I've tried
restarting NM to no avail.  I haven't tried rebooting, but honestly I
shouldn't have to.  Is there some way to tell NM: "Hey, I know there's
more networks out there -- can you go look again right now?"

Any suggestions of things to try?  I suspect that my situation will
change in an hour when I move to another room.

-derek

PS: Why do I feel like I really stress test both Madwifi and NM all
the time with my personal usage patterns???

-- 
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
       URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
       warlord MIT EDU                        PGP key available