I've been experiencing the same issue with the latest build on my router as well.

I've lowered the power to multiple amounts of 40, 35, etc... and have it currently on 20. But every once in a while it'll drop and then not allow me to reconnect for a few minutes.

Is there another setting that I happen to be missing?

Hi Kong,
I have the 3500-router with your latest dd-wrt-firmware. My wi-fi connection drops every 30 seconds. I use it as repeater. I noticed that the biggest problem occures when the channel is 6 or 1. It works more stable on channel 3. I didn't found how to change the channels manually. The repeater changes it automatically (it's set on "Auto" I think by default). Could you give me an advise how can I change the channel under repeater-mode and what else could I change, just to stop this dropping signal? I want to put it on channel 11 for example, but I don't have this option, I think. What would you suggest?

I forgot to tell you that the TX-power is set on 40 mW and I changed it many times on 5 mW, 20 mW etc...it doesn't matter - the signal drops anyway.

Another issue is that when I change something and click on "save" then on "apply settings", it doesn't work how I want it to be. I discovered that it's much better to click on "apply" directly and to skip the "save"-button. Is it normal?