I bought mine (DGL4500)back in Jan,2009...
I'm still using FW1.02 without any problems by far...
as long as I tell,not more than 5 times it resets itself in totally 4 months usage...
I would like to try the newest FW releases ...but with a router that cost well over US$150+,
I expect it's stable and reliable~~
I'm not gonna take the chance if it may screw thing up since I can't go back to default FW (FW1.02) if that's the case...
~Peace~