We have 4 WAP561-A-K9 wireless access points. They keep losing connectivity to the cluster. We also have several complaints from user's being unable to connect to the WAP's at all. They all have 1.1.0.4 as the active firmware. The only way to get them back into the cluster is to unplug and re-plug the network cable. We're using POE. Any input would be greatly appreciated. Thanks in advance.