So I've been having this problem for the last month or so... And I've tried various firmwares to try and figure out the solution, but so far no luck. I'm on the newest Shibby AIO build right now. My router is only letting 1 client connect over wireless. The others will technically connect (grab an IP and everything), but they won't pass any traffic at all. Anything ran over ethernet runs great with no problem. If I try and connect more than say 15-20 feet from the router it won't pass traffic (says I have perfect signal though). Maybe the chip in my router is going out? I've tried to use inSSIDer to find any interference, but I'm not seeing anything that could cause the level of problems I'm having. There are only a few APs visible from my house. Any suggestions?