I have it running on OS X, Linux, Android and Windows, all at the same time, while singing changed across platforms with secure Web Dav based cloud storage. Took me 20 min to set up on all four devices.
As someone who had their passwords leaked by an attack against one of the largest commercial password safes just a few years ago (heard of pwnedlist or the LastPass beaches?) I have been happily using KeePass as amuch more secure FOSS alternative with equal (if not more) functionality ever since, without any hangups to speak of.
Even better, Keepass2 is included in the Ubuntu official repos. And it runs pretty well. Autotyping your password into other programs also works. I really like Keepass2.
sudo apt-get install keepass2
Good luck!We're currently moving our office over to KeepassX for our lists, also iOS clients, Windows and for a while I had it quite happily on my java feature-phone. (Entering the master password on the feature-phone was a bit fiddly though...)