Hmm.. That's strange..
What if you try tapping the blue arrow to the right of the Eye-Fi network and then press "Forget this network" - just in case it's saved some bad info earlier. Then you should be able to get some kind of feedback from the Eye-Fi network when tapping it again.
If that doesn't help, try checking out the excellent Eye-Fi forums
and see if anyone is having a similar problem.
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