IBM X60's dropping out from Cisco 1220 APs

[rds-ryton]

Does anyone have the problem with IBM X60 laptops dropping off the WLAN ? We have Cisco Aironet 1220 APs, and receive messages such as Authentication failed & Sending station has left the BSS - we have a mixture of laptops and it only seems to happen on the X60's

[smalkeric]

I think this is specific to this wireless client. Also, check cisco website and ensure whether your client is ccx compatible