We have an 17 offices with the same basic wireless config. 2 or 3 ap's with the same configuration on them. This one particular office has 2 ap's that intermittently will stop responding to pings and are no longer reachable via telnet or http and users cannot connect through the ap. We are running c1130-k9w7-mx.124-3g.JA1/c1130-k9w7-mx.124-3g.JA1.
I had the site (located in Spain) send me pics of the ap's and noticed that they are not mounted, just laying on ceiling tiles in a plenum ceiling.
Once the ap's are again reachable there is nothing in the log that would suggest there was a problem and the ap does not reboot.
here is the config...
ap1_spain#sh run Building configuration...
Current configuration : 6901 bytes ! ! Last configuration change at 17:23:30 +0200 Tue Sep 14 2010 by dguse ! NVRAM config last updated at 17:23:30 +0200 Tue Sep 14 2010 by dguse ! version 12.4 no service pad service timestamps debug datetime msec service timestamps log datetime msec localtime show-timezone service password-encryption ! hostname ap1_spain ! ! aaa new-model ! ! aaa authentication login default group tacacs+ none aaa authentication login no_aaa none aaa authorization console aaa authorization exec default group tacacs+ none aaa authorization exec no_aaa none aaa authorization commands 15 default group tacacs+ none aaa authorization commands 15 no_aaa none aaa accounting exec default start-stop group tacacs+ aaa accounting commands 15 default start-stop group tacacs+ ! aaa session-id common ! resource policy ! clock timezone +0200 2 ip subnet-zero