I have a new WAP4410 that loses connection to our LAN after various amount of time. It doesn't even have to be in use, it just stops responding. My wireless clients are still connected to the AP, but no traffic gets past the access point. Similarly wired clients cannot ping/connect to the wireless clients or AP. The up time (or down time) is not consistent. If it does not come back 'online' in after a few minutes then I must power cycle the AP. I have been through all the discussion threads here without any resolution. Any help with this is appreciated.
Here is my network setup: DFL-300 Router (DHCP Server/Firewall), Dell PowerConnect 2748 Web Managed Switch, and the WAP4410N. The AP is set to B/G mixed mode, with two SSID's broadcasting. Each uses WPA2-Personal Mixed security. VLAN and MAC address control are disabled. I currently have wireless web access enabled (so I can still access it while unresponsive). It is hardware revision 12 with the latest firmware.