Linksys Wireless Router :: E1200 - Client List Will Not Display

I picked up an E1200 and set it up successfully.  I am using wireless MAC filtering, and decided to pull up the list of connected wireless clients (Wireless >> Wireless MAC Filter >> push "Wireless Client List" button).Immediately after this the Web UI of the E1200 becomes inaccessible.  It still routes traffic, and the router remains pingable, but it will not allow access to the Web UI for several minutes.  The error that appears upon attempt to access the Web UI during this time window is similar to the above, but reads "Error 102 (net::ERR_CONNECTION_REFUSED): The server refused the connection."
 
I have tried this in Google Chrome, Firefox 4, and MSIE on two separate computers.  Each browser displays the error a bit differently (MSIE, for example, just says it can't display the page and gives no further detail) but the net results are always the same.  I have tried resetting the device to factory defaults in addition to re-downloading the firmware from the Cisco/Linksys website and installing it.  No improvement.
 
I have also noted that the Log (Administration >> Log; and yes, I have it enabled) doesn't appear to be picking up anything at all.  In fact, the Security log, which supposedly (according to the Help) "displays the login information for the Router’s browser-based utility," is also blank.