For what it's worth, I am having a similar problem, at pretty much the same time, with the same specifications (model number, hardware version, firmware version).   My problem is a bit different, in that averaging about 3-4 times of any given day, my router will either; a) "turn off" in that all the light except the left most one will go off, or b) will reboot. in either case, turning the router off and on again seems to fix it for a while. ... View more