a bit more info from sh log:
I 10/22/06 14:32:40 00076 ports: port C23 is now on-line
I 10/22/06 14:33:18 00077 ports: port C22 is now off-line
I 10/22/06 14:33:20 00435 ports: port C22 is Blocked by AAA
I 10/22/06 14:33:22 00435 ports: port C22 is Blocked by STP
I 10/22/06 14:33:25 00076 ports: port C22 is now on-line
I 10/22/06 14:33:45 00077 ports: port C22 is now off-line
I 10/22/06 14:33:47 00435 ports: port C22 is Blocked by AAA
I 10/22/06 14:33:48 00435 ports: port C22 is Blocked by STP
I 10/22/06 14:33:51 00076 ports: port C22 is now on-line
I 10/22/06 14:38:51 00435 ports: port C23 is Blocked by AAA
I 10/22/06 14:39:52 00435 ports: port C22 is Blocked by AAA