Wireless connection drops consistently - bcm43225 card, brcmsmac.

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https://bbs.archlinux.org – Every so often when I boot my notebook, and initiate the network connection like so:sudo ip link set wlan0 up sudo wpa_supplicant -B -i wlan0 -Dwext -c /etc/wpa_supplicant.confwait for ten secondssudo dhcpcd wlan0dhcpcd polls, then connects fine.  But, after about 10-20 seconds, the connection drops.  10-20 seconds later, it's back up.  This becomes apparent when I ping a site, because it goes 'sent' for about ten pings, 'failed' for about ten pings, etc.  I can't figure out what it is.  Some of the troubleshooting I've done:sudo ip l (HowTos)