WIFI and DIR-655

same problem here.

if i turn off the security on the router, then it will work.

i'm using a ParkerVision WR1500 router.

Same router same problem... the DNS solution doesn't work, and doesn't make sense, it works if the security is off, so dns doesn't have anything to do with it. I will mess around with a static ip tomorrow. I have a static ip so maybe that will help, Apple needs to fix this, I will not turn off my security... My Wii works fine with security and it only cost 1/3 of the price of this phone!!!!

I have the same problem with my DIR-655. I tried setting up the account manually without success till I reduced the size of my pass phrase. I left the router set to automatically select WPA or WPA2 and manually selected WPA2 on the IPhone. My pass phrase was 19 characters long so I reduced it to 8 and had no problem. DHCP works fine and it will auto-connect whenever I am at home. I have a Linksys router at work that has a 16 character pass phrase and my IPhone works fine with it. I went back to the 19 character pass phrase on the D-Link and the IPhone fails. My VGN-A790 VAIO laptop connects using the 19 character pass phrase on the D-Link.

This new update disabled my wifi permanently. My wifi button became inactive (gray instead of blue) after the update. The wifi was working fine with my linksys router until this update...Tried calling apple, they could not help...They said I might have to get this phone replaced )=.