While we are at 802.11g.

I've got a Netgear WAG511 pc-card in my Soekris box as a replacement
for my trusty DWL-650 working as an AP.

Everything works as fine as before, as long as I use 11b mode.
Whenever I switch the card to 11a or 11g, the box reboots quite
fast, mostly a few seconds after it got up.

Using top it seems, it dies off of interrupt storms, I see
the kernel spending 70-90% of it's time in interrupts.

Is that a known bug? Did I miss something in the configuration
part? This is my /etc/ifconfig.ath0:

inet 10.0.0.2 netmask 255.255.255.0 media autoselect mode 11b mediaopt hostap nwid <mynwid> nwkey <mykey> chan 7

The card:
http://www.netgear.com/products/prod_details.php?prodID=166&view=
http://www.netgear.de/produkte/wireless/dual_band/wag511.html

NetBSD sees this:
ath0 at cardbus0 dev 0 function 0ath0: waking up from power state D-973062144
ath0: mac 5.6 phy 4.1 5ghz radio 1.7 2ghz radio 2.3
ath0: 11a rates: 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
ath0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
ath0: 11g rates: 1Mbps 2Mbps 5.5Mbps 11Mbps 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
ath0: 802.11 address: 00:09:5b:69:43:1e

The system:
NetBSD helge 1.6ZI NetBSD 1.6ZI (HELGE) #1: Fri Feb 13 19:21:49 CET 2004  coto@hauke:/usr/src/sys/arch/i386/compile/HELGE i386

Thanks in advance!

-- 
Tom