Is the dhcpcd process trying to start up more than once? I think by
default it is executed in the net.xxx script (xxx is the interface), so
check to see it is not starting up on it's own using rc-update show.

Cheers,
David

jb_is_not@home.now wrote:
> After days of wrangling with /etc/wireless, I got it -- almost. One
> problem remains. At boot, wlan0 sets up fine, but then dhcpcd fails,
> returning that "dhcpcd is already running on wlan0". Once booted, I
> must remove /var/run/dhcpcd-wlan0.pid and then run dhcpcd, or manually
> run "/etc/init.d/net.wlan0 restart". Either works. I don't know if
> the problem is in the wireless or net script or in some shutdown
> process. Any advice, pointers, etc. appreciated. Thanks.