I got a WLC4404 running software version 220.127.116.11 with 40 LWAPPs (mostly 1242AG). We got new Dell Latitude E6500 Laptops with Intel 5100 NICs. After upgrading the bios to the latest version and installing the latest wlan driver, wireless is working the most time.
After about 4 reboots I see the following message in the WLCs logfile: "Thu Sep 18 13:53:10 2008 AAA Authentication Failure for UserName:host/hostname.domain.name User Type: WLAN USER".
After I disable the wlan-card, it's working again. Could someone interpret this message or has an solution?