[c-nsp] Can Aironet change config itself?

Tue Jul 18 01:37:59 EDT 2006

I've gon one Aironet 1300 with local radius on it.
NMS gathers every 3 hour configs from all devices in network and send diff via email.

After weekend I've discovered that nthash has changed on Aironet, my tacacs command accounting log says that nobody from NOC on some-where else login to aironet. Why config has 
changed?

PS: This is diif from NMS:

===  ankara =============================================================
  !
-! Last configuration change at 10:55:50 ALMT Mon Jul 10 2006 by root
-! NVRAM config last updated at 11:32:49 ALMT Mon Jul 10 2006 by root
+! Last configuration change at 15:38:25 ALMT Sun Jul 16 2006
  !
  version 12.3
  no service pad
@@ -235,7 +234,7 @@
  tacacs-server directed-request
  radius-server local
    nas 192.168.232.18 key 7 03484F1E04192B424C1B
-  user afantasy nthash 7 047E2E505707691A504F2443475A ... skiped
+  user afantasy nthash 7 06232A7714682C4D5C41332C5D .... skiped
  !
  radius-server attribute 32 include-in-access-req format %h
