I just think it is the phone myself, I have seen it with other routers too. I love the phone! It has all of my engineering calculators, converters and "what not's" covered, the apps are free for the most part.
My Blackberry never had a problem. My problems started with the original Samsung Captivate, those and Xbox's have given me way too many headaches!
Thanks for the TKIP info, I will have to try it. Due to the economy, arrests for "wardriving" in nicer neighborhoods are skyrocketing here in LA, so I went with a crazy long passcode and AES, I also took almost everybody off WiFi. Went from 15 WiFi clients to 3 and one of those (my laptop) is 5ghz only.
Since everybody has wised up and went to WPA2, they are using brute force to overload the router and then try and capture your WPA2 device logging back in. I went to the "dark side" over the weekend and read up on how it is done, they still have a bit of work to do on WPA2, but they have published tools to do it with, just your weekend warrior is not going to be good at it. They are actually publishing huge password lists to feed into the program to try and get through that way. So I switched to 64 random hex characters, essentially 256bit.
I would like to loose the high power A/P now that D-Link has cranked up the power on the DIR-827, but 2 exact models of the same exact phone, one will connect, the other will not! The power on the D-Link is not a high as my A/P, but the A/P is excessive with the D-Link being just right. It covers my property and not 2Km down the road.
The 5Ghz coverage from the DIR-827 to my laptop is the whole house, you walk outside and you loose it, but 5Ghz does not go through stucco well. That is PERFECT from the 1 or 2 rooms of my last router. Whole house 5Ghz coverage rocks, it is mainly at 300Mbps so I get my 100Mbps provided by my ISP without a hitch, but the Androids have junk for antennas, so there are dead spots.
Hopefully Android will improve it's firmware/OS. I here that Apple has very similar apps that I use at work. It is nice to show someone that does not understand electronics a simple ohms law calculator with graphics and everything. They walk away without an ounce of doubt that what we have published or asked for is correct!