One of our users gets de-authenticated every few minutes from our Cisco 1240AG APs. He is using a D-Link DWL-AG530 NIC. I do have Cisco Aironet extensions enabled on the AP.
Any ideas will be appreciated.
Here is the Log entry from the AP Mar 7 16:32:54.608 Information Interface Dot11Radio0, Station X Associated KEY_MGMT[NONE] Mar 7 16:32:52.305 Information Interface Dot11Radio0, Deauthenticating Station X Reason: Previous authentication no longer valid Mar 7 16:32:52.305 Warning Packet to client X reached max retries, removing the client