That's the final straw for me. Just exported my login details, emptied out my lastpass vault and uninstalled the addon. Will stick to storing my login details in a Dropbox distributed GnuPG protected flat file. Less convenient, but at least I'm not reliant on a third party.
That was my initial thought, but no. All dropbox files are local. You only rely on Dropbox for synchronizing across your designated machines and backing up on Dropbox, but Dropbox going down does not restrict access to any local Dropbox folder.
I don't understand why you think I wont be able to access my data anytime? Dropbox synchronises the files so you have a local copy on each of your Dropbox hosts. So if Dropbox is offline, or you get disconnected from the Internet, you can still access them...
Worse case scenario is something causes the file to get deleted and that propagates to all of the other hosts and deletes their local copies. But yes, I have backups so that isn't a problem.