Have you restarted your router and/or computer? If not, please give those a try.
The newest log shows the card uploading through your router just fine near the beginning, but near the end we can see the symptoms you described (the card receives an IP address but doesn't appear to transfer). It's the same firmware and the signal strength is good, so I wonder if there are any other variables at play here.
If rebooting your devices doesn't help, please make sure you have some photos on the card waiting to upload, and plug the card into your computer using our card reader, wait 2 minutes, then save another card log. We'll be curious to see whether the card remained on for 2 minutes (and uploaded anything) or disconnected again.
Please email the card log and your Eye-Fi Helper log as attachments to firstname.lastname@example.org
with the same same details about what is happening, and a link to this thread.
To find the Eye-Fi Helper log, check this post: viewtopic.php?f=2&t=5359#p20322