I rely on Dropbox to have my common files available to me all the time. I can even pull them up in the chrome browser with the dropbox extension and I use it to queue torrents on my home computer.
So basically I can still get Dropbox so that is something I won’t be missing. But even if I did, I can also use Ubuntu One. I just signed up for it and so far it seems like a very good equivalent of Dropbox. No surprises here and the transition is on track!