Supposedly from what little I know of the error/exit code of "ERR_DMA" is suppoedly it had something to do with the 2wire potentially being in the "wpa-psk and wpa2-psk" However I had another chat with another peer of mine tonight, Someone mentioned also going in and turning off the packet flood inside the 2wire. Now one thing I had a notion of trying with a spare 2wire I have is unchecking all the packet detections the 2wire does on the firewall and see if that makes a difference.  Most (not neccsarily all) don't normally check for these things (least my linky/dd-wrt never did). That might be a key as well. 

Another thing is also try changing it to WEP and just 802.11b- from some people I have heard from that seems to clear up some wireless issues as well.