OK thanks that's great news and we will declare victory for this campaign then. Thanks to all for your support - and to Dropbox for finally doing the right thing.
I can't set a password for the "Vault" folder on my iPhone app or in Macbookpro folders OR on the website....I used to have a lower paying account where Vault was offered first. Then I upgraded to Professional and the "Vault" folder was downgraded. I still have the folder with its contents BUT it's not password secureable !
May I ask to post any questions or problems you may stumble upon while using it on a separate thread in order to keep track of any issues regarding the feature?