IOS 4.3.4 - intermittent wifi connection

Since I updated to 4.3.4 on my iPhone 4 I've not been able to connect to my wifi at all. Worked perfectly before I did the update this afternoon.
Will either connect and stay for a few minutes. or wont see the network/wont connect when prompted for the password. Anyone else having this issue. is this a known issue?

Had the same problem. I think I narrowed the issue down to wireless networks that use some form of security. I was able to briefly connect to my 802.11n network that's using WPA2, but the connection would drop quickly. Most of the time I could not connect at all. My 802.11g network had the same problem, so I tried scaling back to WPA and then to WEP. Still no luck. Tried changing password complexity and even the radio channel I was using. Finally I completely opened up the network and I could reliably connect.
I decided to revert to 4.3.3 this morning since I didn't have this problem with that iOS version. It fixed the wifi issue, but I had to wipe my phone in the process.

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