While most people use MyWi to tether a 3G connection to a computer (yes, i do that primarily), I also use it when I travel. On flights with wifi, gogo is cheaper on an iPhone than it is on a computer. I buy it on my iPhone, and then I tether my iPhone's wifi connection to my MacBook. On my last 3 flights, it hasn't worked... In Network Preferences, it shows the Green dot, saying i'm connected, but it doesn't seem to work. Is GoGo becoming wiser and somehow blocking this? I had a flight last week on Tuesday and another on Friday. In my Thursday in between, I went to Starbucks, and I used the same technique w/ the ATT wifi there, and it worked without issue. So I'm not sure what the problem is... has anyone else encountered this? It used to work! I tried it over USB + Bluetooth - neither worked. both flights.