Dropbox doesn't leave "Connecting..." state [closed]
I dont know if there is any way to actually solve this right now, but I have the same problem. You could help about with clicking on the "this bug affects me too". https://bugs.launchpad.net/ubuntu/+source/nautilus-dropbox/+bug/1069113
For a little workaround you can check the status of your dropbox by using this from the terminal:
dropbox status
I have the same problem. Temporarily, I think you can solve with this:
https://www.dropbox.com/help/72/en