We've been recommending this as an alternative to Dropbox where I work (in the UK) for a few years now, for exactly the reasons given in the title text. Yes, it

We've been recommending this as an alternative to Dropbox where I work (in the UK) for a few years now, for exactly the reasons given in the title text. Yes, its a shame its Java-based, but they do have clients for Windows, Mac, Linux iOS and Android. (No, I'm not connected to Wuala in any way, I don't even use the service myself, but as an alternative to Dropbox I think its a good one.)