Script /etc/init.d/yeeloong-base can be used to turn the wifi interface on the Yeeloong on and off. After hibernating the machine this is no longer possible. This is because that script controls the interface via /sys/class/rfkill/rfkill0, which is then a broken symlink. A new (non-broken) symlink /sys/class/rfkill/rfkill1 has been added (number depends on how many times you hibernated). The wifi interface can be controlled through it by manually echoing to it.

This is not a problem for NetworkManager. It can still turn wifi on and off after hibernation via the context menu of the applet.

This is with kernel 2.6.35.8-libre2-lemote. I think it's the same with other kernel versions, but I haven't formally tested that (yet).