Frankly I'm not 100% sure on the cause of connectivity issues other devices under Buffalo DD-WRT. I had been running stock DD-WRT (I've gone through 14929, 14896, 14402) for several weeks with no connectivity issues on any wireless device. The new laptop and Buffalo version of DD-WRT came about roughly the same time. I did notice some issues with other devices at this point with Buffalo DD-WRT but the laptop always seemed to go down first (it was also the most used on wifi) and since the router required a reboot, I cannot be certain if it was the router having issues or the laptop causing issues with the router and putting the router in an odd state. At different times, however, I did notice wifi issues with two separate devices. Those devices are a Motorola Droid and an identical Buffalo WZR-HP-G300NH which was running standard DD-WRT (14896) in bridge mode. I rebooted the primary router on at least two occasions when the Droid had issues and I rebooted the bridge twice on separate occasions. Rebooting the bridge did fix its connection issues with the primary router.
My wife reported that she had the laptop on wifi at the hotel where she was staying and had no issues. She returned home today and I'm assuming she will be on her laptop tonight with my router now running stock Buffalo firmware (1.74). I will let you know if she still has issues.
She leaves again Sunday. I will be glad to put Buffalo DD-WRT back on at that point to see if I have issues with my other devices in the absence of the laptop if you'd like.
