I have an AP541N-A-K9. For the past couple weeks it stops work at 5:00pm. The clients can see the SSID but when they connect it fails. The only way to get this to work again, is to set the radio to 5GHz 802.11N. Setting the radio to anything else does not allow the clients to connect.
I have some older clients so I need this broadcast G as well.
I have upgrade the software to AP541N-K9-2.0(1). Does not make a difference. Reset to Factory defaulst and reconfig does not make a difference. There are no Rouge AP's in the area.
Between the issues these have passing DHCP from a Windows server and now this, I'm thinking these devices are not fully baked.