This is VERY CLEARLY a bug in the updated firmware. I have an older Roku box -- the firmware hasn't been updated, and it works fine. I'm trying to set up a second box, and I'm seeing the same behavior as others have reported. Out of the box (and after a factory reset), it sees all the networks in range, connects without a problem, downloads the updated firmware, and reboots. After the reboot, it is flaky. Sometimes the scan finds one network, sometimes another, sometimes none. After MANY tries, it has not successfully connected to any network. This is the case with both my home routers AND my verizon MIFI with no security turned on at all. Screwing around with the router settings and putting the Roku in the DMZ is not an acceptable solution, particularly because IP is dynamic, and the Roku box will be assigned a different IP address every time it is restarted. Roku needs to 1) Acknowledge the problem, and 2) Fix the problem.
In the meantime, is there ANY way to skip the firmware update after a reset and use the older firmware that has no connection issues?