If anyone is interested I am having this same problem... I got fed up with firmware upgrades and downgrades and configuration and I finally came to the conclusion that it was an ARP problem like all of you did. I was so sick of it I came up with the following workaround:
1. Create a batch file that fixes the ARP problem with static ARP
fixarp.bat ##########
@echo off arp -d * arp -s 10.10.10.1 00-0f-3d-06-81-a9 REM Replace with your ROUTER MAC ADDRESS
2. (Optional) Create a batch file that checks arp status
checkarp.bat ############
arp -a pause
3. Save these files on the desktop for easy access.
