ath device appears broken

I updated a 23 May 07 kernel and world to today sources,
and ath0 no longer works.  The first problem is that I
do not use modules and modules are not built.  When I
boot up, the console shows

ieee80211_load_module: load the wlan_scan_sta module by hand for now.

Great, I don't have a wlan_scan_sta module.  So, I can't get ath0
to associate.

The second problem is ifconfig appears to have lost channel
setting capabilities.  I use this script to init my ath0 
connect

#! /bin/sh
ifconfig ath0 inet 192.168.0.10
ifconfig ath0 ssid "MySSID" mode 11g wepmode on
#ifconfig ath0 ssid "MySIDD" mode 11g channel 11 wepmode on
ifconfig ath0 wepkey 0xa_long_hex_number_goes_here deftxkey 1

Note I have to comment out the line with "channel 11" in it.
Furthermore, I see

mobile:root[203] ifconfig ath0
ath0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 00:13:46:c4:5a:c1
        inet 192.168.0.10 netmask 0xffffff00 broadcast 192.168.0.255
        media: IEEE 802.11 Wireless Ethernet autoselect mode 11g (OFDM/12Mbps)
        status: associated
ifconfig: unknown/undefined channel number 11

-- 
Steve