The Dropbox Backup update is going to cause some serious problems for me for one reason: the removal of the "Make files online-only" feature is a lot of the reason I use Dropbox in the first place, because I don't have enough space on any given drive. I have more files set to Online Only than there would be total space in my drive even if it were completely empty.
But I can't disable Backup, either -- the only other option it's giving me -- because I use it heavily, and a lot of file paths will break if moved to be outside of the Dropbox directory.
I'm at a total loss here. Right now it seems my only real option is to keep the window informing me of the update permanently open.
If nothing else, please reconsider the removal this feature, because it's a very important feature to have.