I upgraded to this yesterday and everything seems pretty solid and the wireless connections seem fine, (8 devices all ok).
I did notice that when I tried to forward ports I could not use the "-" as a separator.
I had to write the ports in notepad++ i.e. 50000-50010 and then paste them in to the gui, but it worked fine and was accepted.
A small bug maybe?
Operation Mode:Wireless router Firmware:378.51
Use a colon for a range of ports.
50000:50010