Rebooting AP's causes problems with the SM's

We have seen a problem and are not sure if this is a “feature” of motorola

When we reboot an AP - the SM’s connected to that AP remain registered etc and the customers can ping the SM - however the customers cannot surf or ping our Cisco.

The only way to get the SM talking again is to reboot the SM.

Are we doing something wrong or is this the way it is ???