In netcfg 2.5 the configuration options for auto wireless have changed. netcfg 2.5 rc1 is in [testing] currently.
The new automatic connection has proper roaming support and will prove more reliable than the old setup - particularly with more complicated wireless configurations.
To migrate to the new automatic wireless setup:
- pacman -S testing/wpa_actiond
- Set WIRELESS_INTERFACE="" to your wireless interface in /etc/rc.conf. For example WIRELESS_INTERFACE="wlan0"
- Add net-auto-wireless to your DAEMONS=() array.
There are also some very minor configuration changes that will only affect a small number, these are detailed here: http://bbs.archlinux.org/viewtopic.php?pid=656086#p656086