I don't get what the problem is. You have your seed no? Did you even read how greenaddress works? If there honestly is a bug in the software your funds should still be safe with your passphrase. Why don't you check out how the services works before freaking out. If you are using it correctly you should be fine. And who is to say someone hasn't gotten your details and IS logged in somewhere else?
I know i can retrieve funds without using the service after 90 DAYS.
If someone is logged in elsewhere why is it that there are others in
https://bitcointalk.org/index.php?topic=521988.140 that are experiancing the same issues as me. Are we all being hacked? That is a reason to freak out for me. Maybe he/she will wait until the 90 days expires and take my money.
BUT! If i login, i should be able to click logout of the other session. WHY IS IT THAT IT DOESN'T LOGOUT OF THE OTHER SESSION THEN?