RELENG_7 and atheros ....

Hello,

I'm having some strangeness with respect to my atheros based card on
releng_7.  This may not sound like much... but together they concern me.
 I'm wondering if anyone has seen similar things.

  1) I've seen two panics while trying to bring the interface up over
the last few weeks.
  2) I get disconnected every night from my wireless router at home.
99% of the time it happens after I've gone to bed.  Once or twice...
while I was sitting in front of it.  It just disassociates?
  3) When I am at the office,  my card will *never* obtain an ip address
from our DHCP server upon first booting.  I must *always* down the
interface, kill dhclient, bring the interface up and start dhclient.

Note that "nothing" has changed aside from upgrading to FreeBSD 7.0.  By
this I mean I've used all/most/many of the same config files to
configure things.  Maybe thats the problem, I don't know.

What can I provide that might offer insight?  Below is a little.

uname
FreeBSD fangorn.nxdomain.org 7.0-BETA2 FreeBSD 7.0-BETA2 #0: Sat Nov  3
01:59:25 CDT 2007

From dmesg:
############################
ath_hal: 0.9.20.3 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413)
ath0: <Atheros 5212> mem 0xfafe0000-0xfafeffff irq 11 at device 2.0 on pci2
ath0: [ITHREAD]
ath0: using obsoleted if_watchdog interface
ath0: Ethernet address: 00:00:00:00:00:00
ath0: mac 5.9 phy 4.3 radio 3.6
############################

From rc.conf
###########################
network_interfaces="lo0 bfe0 ath0"
ifconfig_ath0="WPA DHCP"
ifconfig_bfe0="DHCP"
############################

My wpa_supplicant.conf
############################
# Home
network={
  ssid="My_SSID"
  scan_ssid=1
  priority=5
  key_mgmt=WPA-PSK
  psk="My_PSK"
}

# Office
network={
  ssid="Work_SSID"
  key_mgmt=NONE
  priority=3
}
##########################

Thanks for your help.

-- 
Regards,
Eric