From all reports, Dropbox is compromised by default. However, I also figure they have an easier way to get into any account I have via NSL or preexisting backdoor than to go crack my KeePass file. I'm just trying to keep everyone else out.
I have KeePass installed on my computers and KeyPassDroid on my phone and tablet. The file is shared between them all using Dropbox. This way, if I change it one place it's available at all the others automagically, and in case it gets corrupted I have a 30-day history of changes at Dropbox's site. I've had no problems, I like its built-in and configurable password generator, and it works a treat with the KeeFox plugin for Firefox.
(YMMV in that you may have issues with Dropbox, but for me, it works.)
"When it comes to humility, I'm the greatest." -- Bullwinkle Moose