Cisco Aironet 1252 AP and N Data rates

I was having an issue getting Netbooks to connect to the Cisco Wireless AP's with "N" Data rates. Standing 10 feet away I'll I could get was 54 MBPS. I spoke with TAC and apparantely Cisco only supports the "N" rates if you are using Open Authentciation or WPA2-AES at the moment. Good to Know.