Just got my tessel today (6/12/2014). Went through a couple of tutorials, and tried wifi.
First time around, the blinking orange light turned solid, and the console did the Acquiring IP address. with the dots. That eventually timed out, and it started "Retrying..."
and there it sits. This time it is not printing the little progress dots.
The orange light is solid, but it never gets out of the Acquiring IP address. on the command line.
I checked the router, and everything is fine there. I moved to within 15 feet of the router now, just to make sure.
I'm running from Windows 8.1