it has come to my attention that i might need to post this separately, but, i have never experienced the signal loss, of course, i had never used stock antenna's on my DGL-4500.
in fact, the DIR-625 i had a pair of signal amplifiers hooked into it, and i could connect to it down the block and across the street.
in a round about way of putting it... its not that D-Link is at fault for their firmwares, its that their antenna's aren't handling their signals properly, which is why i switched out my antenna's for a pair of Hawking Technologies™ HAI7SIP, 2.4GHz Hi-Gain WiFi antenna which boosts your wireless signal strength from 2dBi (standard power) to 7dBi.
i recommend this strongly, and for those of you out there,please make life easier and live by this motto, "D-Link for the routers and HawkingTech for the antennas"
Hawking Technologies
http://www.hawkingtech.com/products/productlist.php?CatID=32&FamID=58&ProdID=214if you have anything else to add, please by all means reply, also, if you know another reliable antenna brand post that as well, i am hoping to find the 15dBi amplifier usb antenna... seen it a while back when i was still in the army in a PCMagazine they were talking about the security of your wifi, and how others can piggy back on your wifi, well, i want the antenna to extend my laptops range... i just am too lazy to do anything about it... lol.