I have not seen this problem before however my weekly "ration" of Wifi CCK's is very meager. I was on an MRV upgrade and installing the Wifi CCK as part of the job. Everything was going fine until I attempted to enter the customers security key. I entered the key "Zamboni552" (hockey nut) after correctly selecting the SSID of the customers router and the router repeatedly rejected the key. To make sure the passkey was valid I connected to his network on my smartphone. It would not work after several attempts. I have never had this issue. Any ideas?